OJS Error while editing metadata

Hi! When I try to edit article metadata, an error occurs (screenshot 1). Although literary references are indicated. What can be wrong? OJS version

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Check if references are a required field in Settings > Workflow > Submission > Submission metadata. If they are deselect it for now.

I am guessing that the validator for the field was not updated when the references were moved to the other tab. @bozana, you probably know about this?

If I disable validation, then there is no error. But at the same time, the modal window does not close, although the changes are saved.

Yes, that is a separate problem mentioned here: Submission metadata form: pressing save button triggers browser errors · Issue #4072 · pkp/pkp-lib · GitHub