Error Evaluating UI Expression

I´m doing the Appian Developer Course, and in the Build an Application Step by Step part 5 I have this error, related to the Record Type:

Expression evaluation error at function a!gridField_23r3 [line 51]: A grid component [label="null"] has an invalid value for "columns". A grid column [label="Image"] has encountered an error. Expression evaluation error at function a!imageField [line 52]: User Does Not Have Rights to Perform this Operation.

Can someone help me with this error?

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