I have a question regarding"Missing keyword syntax"

I encountered a problem with "There was an error in an expression in Process Model Properties at Process Start Form : Neither variable(s) nor rule(s) found: type" when I made a data connection between the interface and XX and then published it. variable(s) nor rule(s) found: type", and then there was a "Missing keyword syntax" message in the interface, and I don't know if there is a relationship between the two.

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