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Internal Server Error when using multiple dashes on page
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This issue has plagued us for almost a year: Internal Server Error; enable debugging provides no additional information.

Amazingly, if a page includes four or five dashes to act as a thematic change or logical topic break, then the server will shit all over itself. It will also fail to report errors in any of the logs, including error_log and php_errors.log:

text preceding logical break...


text following logical break...

I almost could not believe it... But here's the proof for us: Difference between revisions of "SVN". Once we removed the horizontal dashes, the page was submitted successfully. And we were able to repeat the results on other problematic pages. Absolutely amazing...

This damn bug reporter keeps erasing the information we are trying to provide. The problematic version of MediaWiki is 1.26.4. The problem was also present in 1.25.1. MW is running on CentOS 7.2 with PHP version is 5.4.16 and Apache version is 2.4.6.

Event Timeline

Noloader updated the task description. (Show Details)

From the links looks like you have ModSecurity enabled. Try disabling it and see if it works, since it may be a rule of it catching the four dashes

As an aside, remove the ?> from the end of your LocalSettings.php

If you're getting an internal server error, enabling MW debug options won't actually help

Aklapper changed the task status from Open to Stalled.Nov 17 2016, 7:17 PM

@Noloader: Can you please reply to Ciencia_Al_Poder's comment? Thanks!

Unfortunately closing this report as no further information has been provided.

@Noloader: Please reopen this report (by changing its status) after you have provided the information asked for and if this still happens. Thanks!