Error Message to edit the submission data

I received an error message when editing a form submission
Error occurred during the loading of this form. It is recommended not to edit this record until this is resolved.
in the form there are calculation _ if(string-length(${region}) != 0,jr:choice-name(${region},’${region}’),’(unspecified region)’)
when I delete this it works but I want to keep this calculation.
Thank You!

Maybe you will first need to validate your xlsform with this online validator to see if your xlsform has any syntax issues with it.

Dear Kal_Lam Thank you for your response!. As per your recommendation I have tried the online validator. The online validators reveals no syntax issues. but still the problem is there ?

Could you share a screenshot of the same?