Unable to file through NetFile

My husband's return keeps coming up with this error: 

The entry for province or territory of self-employment is not the same as your province of residence at December 31st. Your return is not eligible for NETFILE. If this is incorrect changes can be made under the self-employment profile question in the Personal Profile section of the EasyStep interview.
We moved provinces in 2024. He did not have any self-employment (I did, and my claim went through right away). I've checked to see if there is anything listed under self-employment on his return and there is not. What else can I trouble shoot?