Topic on Forum:Tech Wishlist And Bug Reports
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Recently, on more than one occasion, I've gotten pages that say stuff like:
MediaWiki internal error.
Original exception: [751de38372fc42b723a72e07] 2017-12-14 10:25:10: Fatal exception of type "MWException"
Exception caught inside exception handler.
Set $wgShowExceptionDetails = true; at the bottom of LocalSettings.php to show detailed debugging information.