Can't e-file in the review it says I have forms that can't be efiled and lists forms 3520, 3520-a, 8621 and 8865.

Can't e-file in the review it says I have forms that can't be efiled and lists forms 3520, 3520-a, 8621 and 8865. My return doesn't have any of those forms so what else can I check?