Error message when copying a form

Hello, when I want to copy or delete a form, I briefly receive a Joomla error message as a popup, which disappears after a short time. This affects multiple domains. It occurs on several Joomla sites for me. What do I have to set?

What can I do?

Joomla 4.4.1
Balboa Forms 2.2.1
PHP 8.1.26

Best regards

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