Try to delete the table in relationships-design.
FB_intern_20191101.odb (application/vnd.oasis.opendocument.database), 3.26 KB, created by Robert Großkopf on 2020-02-01 08:40:28 UTC
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Creator: Robert Großkopf
Created: 2020-02-01 08:40:28 UTC
Size: 3.26 KB

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Attachments on bug 130341: 157575