Is it possible to just replace /logs/rokcommon.php with a 'clean' downloaded version of rokcommon.php? I read about various reasons why this happens, but at this point, I'm just looking to replace this gigantic file with a smaller version.
First look at the error message in the log file - that is what you need to fix to stop the log file growing so large. But, yes, you can simply delete that file altogether - it will then be reinstated as soon as another log message needs to be written (with just that one line log entry).
Regards, Mark.
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