[2020] Game crashing on launch after working previously

Could you try briefly disabling any Anti-Virus on the PC, and see if it continues to crash on launch?

That’s unfortunate. I’d recommend you have a read through this: https://support.fatshark.se/hc/en-us/articles/360038965013--PC-PC-crashing-losing-responsiveness-or-Blue-Screening-BSOD-

Error 1127 indicates our backend provider is experiencing some disruption, however it’s my understanding that this is solved now.