Error code

Thank you for replying, @EA_Kent !

I had 31 friends on the affected account. I've removed all of them before clearing the PS4 cache again and booting up the game. Unfortunately that didn't do the trick. I'm still getting the CE-34878-0 error after attempting to connect to lobby. I'll try any other recommention if you have any. I just want to play the game on my account. Thank you again for taking the time out to help.