Sadly this is happening almost every daily for me since updates at end of October. I run from EA App so slightly different.
All you can do is run a diskclean from desktop, repair EA App which will clear cache or reboot and repeat. Will either eventually let you in, ask you to re-install Javelin anticheat (which I believe is cause of these crashes), or come up with a message saying something along this lines of "unable to start game as we have a problem our end, try later". If you get that message, try again an hour later which is obviously not what anyone wants to do as we login in to play the game when we want to not when it's convenient for EA servers!