A non-destructive step you can try is to boot your PS4 in safe mode and then choose option 5 - Rebuild database:
Here is the official link regarding CE-34878-0 : https://www.playstation.com/en-ie/get-help/help-library/error-codes/ce-34878-0/
The only thing that seems to work is to hope that your save files are uploaded to PsPlus and just redownload the most recent. The game crashes and corrupts all save files associated with that franchise. Both backups and autosaves were shot. EA turns out a broken game every year. Not sure why I buy anything they make anymore.