Internal Server Error

[8181f34e] /mediawiki/api.php?action=query&list=categorymembers&cmtitle=Category:Physics Exception from line 212 of /kunden/326321_80336/siwiki/mediawiki/includes/Hooks.php: Detected bug in an extension! Hook ConfirmEditHooks::APIGetAllowedParams has invalid call signature; Parameter 1 to ConfirmEditHooks::APIGetAllowedParams() expected to be a reference, value given
Backtrace:
#0 /kunden/326321_80336/siwiki/mediawiki/includes/GlobalFunctions.php(3877): Hooks::run(string, array)
#1 /kunden/326321_80336/siwiki/mediawiki/includes/api/ApiBase.php(557): wfRunHooks(string, array)
#2 /kunden/326321_80336/siwiki/mediawiki/includes/api/ApiBase.php(673): ApiBase->getFinalParams()
#3 /kunden/326321_80336/siwiki/mediawiki/includes/api/ApiMain.php(444): ApiBase->getParameter(string)
#4 /kunden/326321_80336/siwiki/mediawiki/includes/api/ApiMain.php(363): ApiMain->handleCORS()
#5 /kunden/326321_80336/siwiki/mediawiki/includes/api/ApiMain.php(351): ApiMain->executeActionWithErrorHandling()
#6 /kunden/326321_80336/siwiki/mediawiki/api.php(73): ApiMain->execute()
#7 {main}