TYPO3 Exception 1320585902¶
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$hookObject must implement interface
$hookObject registered does not implement the interface.
Related bug reports are 67933: TYPO3 Core - compatibility6 crashes TYPO3 BE [Closed] and 68480: TYPO3 Core - compatibility6 crashes TYPO3 BE - part 2 [Closed; assigned to Helmut Hummel]. Both are marked as resolved though.