There is also a related critical e-file diagnostic Ref. 53567 for payments needing to be made on the 8978 that appears to have the same issue as diagnostic Ref. 53383 which is generated from entering refunds reported on the 8978.

I agree the 8978 needs to be corrected so it can be e-filed.

Does attaching the 8978 as a pdf by-pass this diagnostic allowing you to still e-file?