Error "Missing Data In File (33 :: 4)"

Hello! I'm working on an after effects project that now won't open and gives me the error "After Effects error: Missing Data in File. (33::4). I've read several older posts about this error and have tried those solutions but I haven't been able to get the file to open. I'm currently running v. 17.1, but I've tried rolling it back to 16.1.3, and 17.0.1-17.0.6, but it will not open up in any of these versions and it will not import into a new project either. I've used rotoscoping, red giant particular, masking, and red giant VFX optical glow in the project file. Does anyone know of any other fixes I can try to rescue this project? Thank you!