I get the same error but mine happens at very random times. Can happen after 5 minutes of play, or 1 hour of play. I’ve contacted Sony and they advised that specific error code has to do with an application error. They said they couldn’t do anything under warranty as the error is only happening with one game. And we all know what game that is. Thanks Bungie. They also advised that the data on the game servers could be corrupted hence why we’re getting these crashes. What’s funny is, my original ps4 runs Destiny 2 perfectly. It’s just the pro that has issues. I have tried everything under the sun. Same result. Hopefully Bungie do something about this ASAP.

That's a Playstation-specific error code, so your best bet would be to contact Playstation support for assistance. Here's the link to their support page for that code: https://www.playstation.com/en-gb/get-help/help-library/error-codes/ce-34878-0/ Googling the code says it has to do with possibly corrupted data/system software. It's possible your Destiny files were corrupted during one of the recent updates, and the game needs to be deleted and reinstalled.

To be honest that sounds like a PS error code. You may want to try contacting them.