Hi there,
If you follow the file path in that error message you should be able to track down that specific .rpak file. Once you do find it try changing the name of that file, then repair the game in Origin. If you're playing through Steam try verifying the integrity of the game files after renaming the file.
Try launching Apex Legends again afterward, and let me know if you're still running into the same error message. Thanks!
/Kent