Fix PDC WATCHDOG TIMEOUT BSOD

Dune, arguably one of the best science fiction novels ever written was brought to a big screen first time by David Linch. Sadly movie itself went through development hell and a lot of troubles and the end result was somewhat strange. The audience was divided on it, some hated it, some loved it but for sure it left a mark in cinema history. Years have passed and just when people forgot about ever receiving another try on a book adaptation Denis Villeneuve has brought his vision of Frank Herbert's novel into its full glory on a big screen. The interesting thing about this new Dune movie was that from the start Denis envisioned it as a two-movie part openly saying that book itself is too complex to be done in a single movie. But, the issue arises when information about Dune part two was hanging on a thread on how well Dune part one will be received and performed in the box office. This naturally brought all kinds of speculation and worry among fans of the franchise, especially because the movie itself was really good and well made. Well for all of you fans and people who wanted to see a continuation of the story can rest at peace now since the Legendary picture has officially announced and green-lighted Dune part two. The budget was given and we can expect part two at the beginning of 2023.

As you know, the Videos folder can be found under “This PC” by default on your Windows 10 computer. However, as per the reports of some users, there are a few occasions where it somehow gets replaced by the Documents folder. In other words, the Videos folders are replaced by a duplicated copy of the Documents folder. Out of the two Documents folder, one Document folder will contain all the usual files and subfolders while the second one is empty. Although when you click the Documents icon on your Desktop (if you have a shortcut), it will still take you to the right Documents folder. To fix this particular issue and get the Videos folder back in the File Explorer, here are some potential fixes that should help.

Option 1 – Run System Restore

The first thing you can try to do to resolve the problem is to run System Restore. This can help you go back to the previous state of your computer before the issue with the Videos and Documents folder.

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.

Option 2 – Try to restore Defaults

The next thing you can do is to restore Defaults. How? Refer to these steps:

• Open File Explorer and then right-click on any of the two Documents folders.
• After that, select the Properties option from the context menu and switch to the Location tab and click on Find target.
• Next, copy the address and paste it in the field above the “Find target” option, and then click the “Restore Default” button.

Option 3 – Try to change the Registry Path

• Tap the Win + R keys to open the Run dialog box.
• Then type “Regedit” in the field and tap Enter to open the Registry Editor.
• Next, navigate to this registry path: HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerUser Shell Folders
• After that, edit the path for {35286A68-3C57-41A1-BBB1-0EAE73d76C95} under the “User Shell Folders” key to match the path shown for My Videos: %USERPROFILE%Videos.
• Once you’re done, open the folder under “This PC” that has the Documents icon and tap Shift + right-click in the folder background, and then select the “Open PowerShell window here” option to fix the naming of the Documents folder. The path should read: “C:users<UserName>Documents.
• Next, execute this command: ri desktop.ini –force
• The command you entered will delete the files and folders and so when added for Documents, it will get rid of the empty Documents folder.
• Now all you that’s left to do is to find where the target location is going to be for both folders and check if anyone foes to the user name location.
• Then delete the one which goes to the incorrect location.

Error Code 0xC004C770 – What is it?

If the Error Code 0xC004C770 popped up on your computer during your activation of the Windows 10 software, don’t worry. This is a fairly common error, especially for people who own more than one computer upon which Windows 10 is installed and activated. The gist of this error code is that the product key that you have entered has already been claimed or used on a different computer. Because there are limitations on the number of computers that can use any given license activation code or product key, this error code can arise when you have exceeded that limit. If you have a single-use license and have already entered the particular product key onto another machine, you may see this error come up during activation.

Both Error Code 0xC004C770 and Error Code 0x803FA071 arise from the same problem and the same steps can be used to resolve both error codes.

Solution

Error Causes

Error Code 0xC004C770 is likely to appear on your screen during activation of Windows 10 if you or anyone else in your organization have already entered in the product key used on another computer. If you have a multiple-use license, the product key that you are entering may already have been used for the maximum number of computers allowed under that license.

Further Information and Manual Repair

There are two basic methods for addressing the issues associated with Error Code 0xC004C770. These methods can easily be implemented by anyone who is comfortable interacting with the Windows Store from their computer, which makes the resolution of this particular error code fairly simple and straightforward.

If you are unable to complete the steps below or Error Code 0xC004C770 has not been resolved after following the guides below, contact a Windows technician who is familiar with the Windows 10 activation process to assist you in the process. You can also get in touch with the Windows technical support team to assist you in the process if needed.

Method One: Purchase A New Product Key from Windows

If you have already used the product key on another computer or have used it on the maximum number of allowed devices, you may need to purchase an additional product key for the computer with Error Code 0xC004C770. Product keys can be purchased physically from a retailer that sells Windows 10 software licenses or purchased directly from the Windows store.

To purchase a new product key directly from the Windows Store, follow the steps below:

• Step One: Select the Windows start button at the bottom of your toolbar. Click on “Settings,” then select the option for “Update and Security.”
• Step Two: Click on the “Activation” option.
• Step Three: In the menu that appears, choose the option to “Go to Store” and follow any on-screen instructions to finalize a purchase of the Windows 10 software and product key.
• Step Four: Use the new product key to complete the installation and activation of the Windows 10 software on your computer.

If you are unable to see the “Go to Store” option when you reach the “Activation” page, you may not be set as an administrator of your machine. In this case, get in touch with the support personnel from your company to complete the purchase, installation, and activation process on your computer.

Method Two: Attempt to Finish Activation via Phone

For users who have changed out parts of their computer’s hardware, like putting in a new motherboard or activating a new hard drive, you may have more success if you attempt activation through a phone.

In order to activate your copy of Windows 10 from your phone, follow the steps below:

• Step One: On your mobile device, open up the search box from the taskbar.
• Step Two: In the search box, enter the phrase “SLUI 04.”
• Step Three: Select the “SLUI 04” option that appears.
• Step Four: Follow the directions given on the screen to complete the activation process for your copy of Windows 10.

As with any error code resolution, if the methods above are not successful or if you are not comfortable with your ability to successfully complete the steps above, get in contact with a qualified professional who is trained in the Windows 10 activation process to assist you or download a powerful automated tool to get the job done.

Error Fmod.dll - What is it?

This is a type of DLL error code. DLL is the abbreviation of Dynamic Link Library. DLL files contain small programs which are similar to executable files. One DLL file may be used to load and run several programs. Fmod.dll is created by Electronic Arts Inc. and associated with Crysis. This file is developed for the Windows OS. This error code occurs when you are unable to access, run and load programs supported by Crysis on your PC. Fmod.dll error code message is displayed in different formats such as:

• "Fmod_event.dll not found."
• "The file fmod_event.dll is missing."
• "This application failed to start because fmod_event.dll was not found. Re-installing the application may fix this problem."
• "Cannot start Crysis. A required component is missing: fmod_event.dll. Please install Crysis again."
• "Fmod_event.dll Access Violation."
• "Cannot register fmod_event.dll."
• "Cannot find C:\Windows\System32\fmod_event.dll."

Error Fmod.dll may pop up when you start-up or shut down the PC or even during the installation of a program.

Solution

Error Causes

Narrowing down to one cause for Fmod.dll error code is impossible virtually because this error may result due to different reasons on your system. Some of the common causes associated with this error code are:

• Viral Infection
• Hardware failure
• Missing, Corrupt, or Deleted Fmod.dll file
• Improper program installation
• Registry issues

No matter what the underlying cause of the reason may be, it is recommended to resolve the issue immediately to avoid serious PC threats.

Further Information and Manual Repair

To resolve this error on your system, try the methods discussed below:

Method 1 - Check the Recycle Bin

As mentioned above, Fmod.dll is a DLL file that is used to run and load a variety of programs on your system. There is a possibility that you uninstalled a program that was supported by the Fmod.dll file and accidentally deleted it. In such a scenario, the easiest way to resolve the Fmod.dll error code is to re-install the deleted file from the recycle bin. For this, go to the recycle bin and search for the file. If you find it reinstall if you can’t then simply download the Fmod.dll file from a reliable website.

Method 2 - Scan for Malware

Malware usually enters through phishing emails and downloads. These malicious programs then hide in your system disguising as either DLL or EXE files. The occurrence of fmod.dll file error may be due to malicious programs hiding in your system. Therefore scan your entire PC with a powerful anti-virus. An antivirus detects and removes all malicious software programs such as viruses, malware, Trojans, spyware, and adware. Try this, to resolve error code Fmod.dll and see the results.

Method 3 - Fix Hardware Problems

Fmod.dll file error may also pop on your screen due to hardware failure. If this is the reason, then we advise you to use the Device Manager an in-built tool in Windows 7 and 8 to fix hardware failures. For this go to the start menu then control panel. Now click on the ‘hardware and sound link’ and then click on the Device Manager. If you find any devices in red exclamation point, then this means this device is problematic. Uninstall the driver for that hardware device and then update the driver. Install the latest version to resolve. Remember, hardware problems are mostly related to outdated drivers.

Method 4 - Restore Points

Use System Restore, an in-built utility also known as the recovery tool, to restore points and ensure your PC is back to its previous working condition before the error code occurred. Simply put, it helps undo recent changes. You can find the System Restore tool in the System Tools folder.

Method 5 - Clean and Repair the Registry

The registry is that part of your PC that stores all the information, activities performed, and files including the junk files, invalid keys, bad entries, and cookies. When these files accumulate on your PC, they take up all the registry space and corrupt the important system and DLL files also stored in the registry, thereby generating such errors. Now you can clean the registry manually. But this process can be time-consuming and slightly technical, hence we advise you to download Restoro. This is a PC Fixer integrated with a registry cleaner. It is easy to use deployed with an intuitive interface. The registry cleaner scans the entire PC and removes all registry errors. It wipes out all the obsolete files and repairs the damaged DLL and system files. Click here to download Restoro.

This post will provide you a couple of fixes you can try to resolve the Windows Update Error 0x8007001E in Windows 10. So if you are one of the users who encountered this particular Windows Update error then you’ve come to the right place. The error code in this error message also happens to be linked to some random BSOD crashes. The error code 0x8007001E is related to a storage space error or out-of-memory-type error. On the other hand, there are also instances when this error has nothing to do with your computer’s space or shortage of memory – it could be that there are broken software components or corrupted system files that are causing this error. Whichever your case is, refer to the options given below to fix the Windows Update Error 0x8007001E.

Option 1 – Run the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter is one of the things you can first check out as it is known to automatically resolve any Windows Update errors like Error 0x8007001E. To run it, go to Settings and then select Troubleshoot from the options. From there, click on Windows Update and then click the “Run the troubleshooter” button. After that, follow the next on-screen instructions and you should be good to go.

Option 2 – Free up some space on your drive

As mentioned, storage space error or out-of-memory-type error might have something to do with this problem so you need to free up some space on your drive. Make sure that you have enough space on your drive (15GB or so should do) and then restart your computer. After your computer reboots, ensure that all the major RAM hoggers are closed before you try to install the update or upgrade again.

Option 3 – Run the SFC scan

The SFC or System File Checker scan could detect and automatically repair damaged system files that could be causing the Windows Update Error 0x8007001E to appear. SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files with good system files. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow and hit Enter.

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

Option 4 – Run the DISM tool

Running the DISM Tool helps in repairing the Windows System Image as well as the Windows Component Store in Windows 10 which might be the reason behind the Windows Update error 0x8007001E. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth”.

• Open the Command Prompt as admin.
• Then type in this command: exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish.
• Once it’s done, restart your computer and then check if the issue is resolved or not on the next startup.

Option 5 – Perform a System Restore

You can also try to perform a System Restore as it can also help you fix the Windows Update error 0x8007001E. You can do this option either by booting into Safe Mode or in System Restore. If you are already in the Advanced Startup Options, just directly select System Restore and proceed with the next steps. And if you have just booted your PC into Safe Mode, refer to the steps below.

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.

Option 6 – Try running Microsoft’s online troubleshooter

You also have the option to run Microsoft’s online troubleshooter which could help you fix Windows Update errors including the Windows Update error 0x8007001E.

Error 1512 - What is it?

Error 1512 is a type of runtime error code. This error may hamper your ability to run and load your desired programs on Windows PC. There are increased chances of runtime error 1512 occurring when system files go missing or get corrupt. Symptoms of this error code include:

• Slow PC speed
• Window System freeze

Solution

Error Causes

There are several for the occurrence of runtime error 1512. These include:

• Faulty or outdated drivers
• Poor Program installation
• Damaged Windows Registry
• Viruses tampering the system settings/memory
• Broken or incorrect Registry entries
• Damaged Windows registry

Further Information and Manual Repair

To resolve this issue you don’t have to hire a professional and spend hundreds of dollars to get it fixed. Here are some of the best and easy do-it-yourself methods to repair error 1512 on your system in a few minutes. These methods are very easy to work around and do not require any kind of technical expertise.

Method 1 - Uninstall and then reinstall the Same Program

Sometimes this runtime error may pop up due to poor program installation. In such an event, it is advisable to uninstall the program and then reinstall it again properly. To do so, go to the start menu, and click on control panel. Now select the program & features option. Here you will find the option Add/Remove Program. Remove the program causing error 1512. Once the program is removed, reinstall it again.

Method 2 - Run an Antivirus Program

Computer viruses are capable of tampering with system settings. Due to this reason you might experience runtime errors like 1512 on your PC. These malicious programs usually enter the system through phishing emails or website downloads. To resolve the issue, you need to run a powerful antivirus program. An antivirus removes all sorts of malicious programs hiding in your PC like malware, spyware, and malware that are responsible for generating runtime errors.

Method 3 - Update the Outdated Drivers on your PC

If the error still persists, then it is suggested to update outdated drivers. Faulty and outdated drivers can also trigger runtime error 1512. To do this, go to the Device Manager. Here use the Driver update wizard to make updates.

Method 4 - Remove the Invalid Registry Entries and Repair the Damaged Registry

The best way to perform both tasks is to download Restoro. It is embedded with a registry cleaner that is quite easy to use. The registry cleaner removes all invalid entries in seconds, cleans the cluttered registry by wiping out all the redundant and unnecessary files. The damaged registry is then repaired and resumes its normal function. Click here to download Restoro and resolve runtime error 1512.

If you are running the Windows Update service but decided to stop it but you encountered an error message instead that says, “The Windows Update service could not be stopped”, read on as this post will help you fix the problem. This kind of error appears when you use the Command Prompt to stop the Windows Update service, especially if you are using cmd without admin privileges. A lot of users reported that they were not able to disable the automatic Windows Update in Windows 10 using Command Prompt. The command used to stop the Windows Update service is the “net stop wuauserv” command. However, when some users executed this command, they got the error message. So if you are one of these users that can’t stop the Windows Update Service via Command Prompt, you can try to fix that using PID as well as checking the Service dependencies. For more details, follow the given options below.

Option 1 – Try to stop the Windows Update service via PID

In case you don’t know, each running service or process has its own unique ID or PID and you can find it in the Task Manager. You can use it to stop the Windows Update service. How? Refer to these steps:

• Tap the Ctrl + Shift + Esc keys to open the Task Manager.
• Next, go to the Services tab and look for the service named “wuauserv” and get its PID.
• After that, type “cmd” in the Windows Start search and right-click on Command Prompt from the search results and then select the “Run as administrator” option.
• After opening Command Prompt with admin privileges, execute this command: taskkill /f /pid <PID>

Note: You need to replace “<PID>” with the PID of the “wuauserv” service. For instance, the PID is 6676, then this is how the command should be “taskkill /f /pid 6676”.

• After you execute the command, you will this message on your screen, “SUCCESS: The process with PID 6676 has been terminated” which indicates that you have stopped the Windows Update service successfully.

Option 2 – Try to check the Service dependencies

Dependencies of a Windows Service in Windows 10 are when windows services depend on other services. Such is the case with the Windows Update service – it also depends on three different services such as the Remote Procedure Call or RPC service, DCOM Server Process Launcher, and the RPC Endpoint Mapper. Meaning to say, if two of these services are not working as expected, then the dependant service will also be affected. This could be the reason why the Windows Update service could not start.

• Tap the Win + R keys to open the Run dialog box.
• Next, type “services.msc” in the field and hit Enter to open Windows Services.
• From the list of Services, look for the following services:
  • Remote Procedure Call (RPC) Service
  • DCOM Server Process Launcher
  • RPC Endpoint Mapper
• After you find these services, double click on each one of them and check whether the Startup type for all is set to Automatic and the Service status is set to Running or not.
• If the service status is not running, then click the Start button. Afterward, check if you can now run the Windows Update service.

Task View feature inside Windows 11 is actually a great feature, letting you quickly view open windows and virtual desktops. How Task view itself could be reached with keyboard shortcut combination of ⊞ WINDOWS + TAB some users will prefer this way of using it and thus button on the taskbar is something you do not want or need. There is a very easy way to remove mentioned button and I will show you how to do it. Right-click the taskbar button itself and click on Hide From Taskbar. That’s it, you have done it. Now in order for you to bring it back if you change your mind, you will have to do some extra steps but it is nothing difficult. Right-click on the taskbar and click on Taskbar settings, you will be lead to Personalization > Taskbar. Inside locate Taskbar Items and switch Task View to ON, you will see the Task View button right away showing itself again.

0x800ccc7d - What is it?

0x800ccc7d is an SSL (Secure Sockets Layer) error message code that occurs in applications like Microsoft Outlook or Outlook Express. The error message is displayed as: ‘ unknown error 0x800ccc7d- secure sockets layer ’. Many offices use Microsoft Outlook for email communication and sending instant messages within the office. This is a highly functional application that enables users to interact with peers efficiently, manage contacts, journals, and reminders. However, the error 0x800ccc7d may hamper your ability to send and receive emails efficiently. Therefore it is advisable to repair it right away.

Solution

Error Causes

The error 0x800ccc7d is triggered by the following causes:

• Damaged profile in Outlook
• Incorrect email account settings
• The Outlook installation is corrupt and damaged. This usually happens due to issues in hard disk storage.
• The outgoing SMTP server does not support secure connections

Further Information and Manual Repair

If you come across 0800ccc7d error code while using Microsoft Outlook or Outlook Express, then don’t you worry! This problem can be easily resolved. In fact, it is so easy to repair that you can do it by yourself even if you are not a technical expert. Here are some ways to fix the 0800ccc7d SSL Outlook error:

Solution 1: Use Scanpst.exe

You may not know this but Microsoft offers an inbuilt Outlook Repair tool. This tool is technically known as Scanpst.exe. This tool is useful when you need to repair Basic header corruption. However, it may not be the best choice if the problem is big and complex.

Solution 2: Reset Your Outlook Settings

Sometimes this error message may occur when the STMP server requires authentication or does not recognize the senders' email addresses. In this scenario, you should check your Outlook settings to make sure that your STMP username and server are correct. For this follow this procedure:

• Go to the Tools menu and then click on Accounts
• Now click on your email account then check its properties
• Click general and make sure that your email address is created in your account’s control panel. If not, then edit and create.
• Next, click servers and see if the box next to the option that says My server requires authentication is checked or not. If not, then check it to resolve the error.

Solution 3: Disable any Anti-Virus

Another alternative to resolve this error is to disable any Anti-virus or Firewall you have installed on your PC. Once you disable it then try sending or receiving the email again. This usually works.

Solution 4: Download 0x800ccc7d Repair Tool

The fourth solution available to resolve this issue is by downloading the 0x800ccc7d repair tool. Though it is similar to Microsoft Outlook built-in scanpst.exe tool, but as compared to it the 0x800ccc7d repair tool is a highly functional tool. There are many 0x800ccc7d repair tools available but we recommend you to Restoro. This tool is a third-party tool that can deal, scan, and fix 0x800cc7d error in no time. What makes this repair tool an excellent choice is that it can repair all broken PST files and emails, recover Outlook items, retrieve deleted files, recover password-protected data, split files to recover oversize PST files, and more. To access and install the 0x800ccc7d repair tool all you need to do is download it here and install it on your PC. Now run it to scan errors. Once the errors are scanned, hit the repair tab to resolve. So, next time when you experience the error 0x800ccc7d, try using these solutions to fix the problem right away!

BSOD or Blue Screen of Death errors are one of the most common errors you can encounter on your Windows PC. One of these BSOD errors is the “ACPI_BIOS_ERROR”. If you suddenly get this error, it means that there is some problem in booting the operating system from your hard drive or Windows was not properly installed on your PC. In addition, this error could also mean that there is something wrong with the CMOS battery located in the motherboard. Unlike other BSOD errors, the workaround for this error is a bit different as these workarounds require a bit more expertise in updating the BIOS as well as setting the correct boot configuration. If you know are capable enough in troubleshooting the problem, refer to the instructions laid out below to fix the BSOD “ACPI_BIOS_ERROR”.

Option 1 – Try to remove the SSD and update the BIOS

The first thing you have to do is to check the primary storage devices on your PC. If you have just installed a new hard drive or SSD recently on your computer, then it’s most likely the cause of the BSOD error. Moreover, you should also ensure that your BIOS is up-to-date to the latest available build.

• Remove the SSD/HDD and inject a different HDD that was already preinstalled in your Windows PC.
• After that, update the BIOS to the latest available build. After updating it, insert the old SSD/HDD and then try to boot your PC again. The problem should be fixed now. If not, refer to the next given option.

Option 2 – Try to check the CMOS battery and reset the CMOS module

As mentioned earlier, the CMOS battery might also be the one that’s causing the problem. It is a physical component of the motherboard and is a memory chip that contains all the settings configuration on your computer and is also powered by a battery. So if your battery loses power, the CMOS will be reset and as a result, all the configurations will be gone as well. It is also possible that the CMOS module is not properly working and every time things are saved, they are properly written due to the battery. That’s why you have to consider changing the CMOS battery and see if it fixes the problem. In addition, you also have to make sure that you completely reset the CMOS module and then try booting your PC again.

Option 3 – Try to check the BIOS settings

If the BIOS settings are incorrect, chances are that’s the reason why you’re getting the “ACPI_BIOS_ERROR” BSOD error. Every BIOS has different settings which you can make use of to enhance your computer experience. So make sure that your BIOS is up-to-date and that the settings are in accordance with your requirement. Another thing you can try is to disable the Legacy USB and the Legacy BIOS in the BIOS settings if you are trying to install a 64 bit Windows version. Make sure that you also enable AHCI before plugging in the installation drive on your PC. Moreover, ensure that your PC is using IDE or Integrated Drive Electronics mode instead of SATA or Serial Advanced Technology Attachment. Aside from that, try to check the extracted setup if it is in NTFS format, if it is, you should extract the ISO in FAT32 and use it to install Windows.

Option 4 – Try to reset the ACPI Compliant Control Method

ACPI or Advanced Configuration and Power Interface provide an open standard that operating systems can use to detect hardware, perform power management, as well as monitor the status of your device and provide information for other processes. Chances are, there are some misconfigurations with this module on your PC that lead to believing that there is no battery present. That’s why you need to reset it and see if it fixes the BSOD error or not.

• Boot your PC into Safe Mode.
• Tap the Win + R keys to open the Run dialog box.
• Type in “devmgmt.msc” in the field and tap Enter to open the Device Manager.
• After opening the Device Manager, go to the “Batteries” section and click it to expand it and then right-click on the “Microsoft ACPI-Complaint Control Method Battery” option and click on Uninstall.
• After you disable the module, click on any empty space and then click the “Scan for hardware changes” option.
• Then check if you can now boot your PC normally and without the BSOD error.