Internal Server Error

[31eb1151] /api.php?hidebots=1&days=30&limit=50&target=Wiki_G%C3%B6ttingen%3AAdministratoren&action=feedrecentchanges&feedformat=atom Exception from line 222 of /www/htdocs/w0159ac1/wiki-goettingen.de/update/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 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/GlobalFunctions.php(4013): Hooks::run(string, array, NULL)
#1 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/api/ApiBase.php(592): wfRunHooks(string, array)
#2 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/api/ApiBase.php(713): ApiBase->getFinalParams()
#3 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/api/ApiMain.php(470): ApiBase->getParameter(string)
#4 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/api/ApiMain.php(346): ApiMain->handleCORS()
#5 /www/htdocs/w0159ac1/wiki-goettingen.de/update/includes/api/ApiMain.php(334): ApiMain->executeActionWithErrorHandling()
#6 /www/htdocs/w0159ac1/wiki-goettingen.de/update/api.php(85): ApiMain->execute()
#7 {main}