I try to change dashboard but metabase gives a strange message

Bug reports
1

Hi!
I have a problem. I try to save changes after editing my dashboard. (first screen)

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image3582×664 103 KB

Metabase gives this message (second screen) despite the fact I have admin rights.

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image3582×1626 143 KB

How is it possible and how to solve the problem?

2

Can you check the log and see what operation threw the error?

EDIT: A caching layer or WAF could be interfering with the page. This information might help: