[Gramps Web] Internal Server Error - If I now want to add a person or location to the lists

I have reinstalled Gramsweb on my Synology with docker. I can open it and have also been able to create the user. If I now want to add a person or location to the lists, I get the error message: “Internal Server Error”. Can anyone help me further?erating System)

Gramps 6.0.1
Gramps Web API 3.0.0
Gramps Web Frontend 25.5.1
Gramps QL 0.4.0
Sifts 1.0.0
locale: en
multi-tree: false
task queue: true
OCR: true
chat: false