XF 1.4 Error in Server Error Logs

[Stephan Whelan]

Hi - i'm getting the following error about one every 1-2 days in the xF Server Error Logs:

ErrorException: Fatal Error: Class 'XenForo_CacheRebuilder_Forum' not found - library/XenForo/CacheRebuilder/Abstract.php:114

Any ideas what is causing it and how to resolve?

 

[Paul B]

Have you recently upgraded or done any work on the server?
The error suggests there may be missing file(s) or corruption.

Run a file health check in the ACP.
Download a new upgrade .zip and upload the files to your server.

 

[Mike]

I would note that is an old file. It was removed in XF1.2. Nothing should be calling it any more.

 

[Stephan Whelan]

Have you recently upgraded or done any work on the server?
The error suggests there may be missing file(s) or corruption.

Run a file health check in the ACP.
Download a new upgrade .zip and upload the files to your server.

Just ran a File Health Check:

File Health Check
All 1,580 checked files are present and correct.

 

[Stephan Whelan]

I would note that is an old file. It was removed in XF1.2. Nothing should be calling it any more.

Hmmm - how can I tell what is trying to call it? Doesn't seem to be much info in the error log:

 

[Mike]

Unfortunately, as PHP doesn't give a backtrace for fatal errors, it's hard to get more specific information. I've just searched the code for references to the function that is triggering your error and there's no way for it to be called via deferred.php by default. (It's actually only around to reduce backwards compatibility issues with add-ons originally built for 1.0/1.1.)

As such, I can only guess this is related to an add-on. Unfortunately, it's hard to figure out which one. It appears to be attempting to rebuild forum information. Any idea what this would be based on the add-ons you have installed?