.. include:: /Includes.rst.txt ========================== TYPO3 Exception 1195126772 ========================== .. include:: /If-you-encounter-this-exception.rst.txt $toolbarItem must implement interface `TYPO3\CMS\Backend\Toolbar\ToolbarItemHookInterface` ========================================================================================== #. Check whether the requested class really implements :php:`TYPO3\\CMS\\Backend\\Toolbar\\ToolbarItemHookInterface` Exception on shortcut ===================== #. The error might have been caused because the argument to the constructor was not passed by reference as requested by the Interface/Class. In general this causes just a warning but can also lead to serious problems. #. There's a bug in PHP 5.5.6+ which causes this Exception: https://forge.typo3.org/issues/53682