Footage is just a YELLLOW frame

Help! I wondering if anyone else has come across this issue. Have filmed some footage on the Ursa Mini Pro 4.6k. On getting it back to edit. some, not all of the footage is just a yellow continuous frame. This is not just after transfer, I have gone back and looked at the data on the CFAST card itself. It's yellow. I've attached a screenshot. The audio in the file is intact and upon bringing it in to Premiere it sounds fine. I have tried to view in PP and in Blackmagic Braw Player. Braw Player wont even open it. Files sizes are consistent with regular footage.
I can't find anything online and am at a loss? Anyone know anything about this?
I can't find anything online and am at a loss? Anyone know anything about this?