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Bug #95496

Updated by Nikolas Hagelstein over 2 years ago

The constructor of TYPO3\CMS\Backend\Form\Behavior\UpdateValueOnFieldChange expects the $identifier to be a string. 

 Unfortunatly $identifier is (can be )an integer when called from    but it can be an integer when called from TYPO3\CMS\Backend\Controller\FormFlexAjaxController. 
 See https://github.com/TYPO3/typo3/blob/master/typo3/sysext/backend/Classes/Controller/FormFlexAjaxController.php#L131 

 Quick and dirty fix would be just cast it to a string before passing it.

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