Hm, that’s really strange! That’s not an error usually seen when launching the game.
If you try to launch in Official realm is the game still crashing consistently?
If so, I recommend to try the following:
Add Anti-Virus and Firewall exceptions for both Vermintide 2 and Easy Anti-Cheat.
You’ll need to add exceptions for:
vermintide2.exe in \Program Files (x86)\Steam\steamapps\common\Warhammer Vermintide 2\binaries
EasyAntiCheat.exe in \Program Files (x86)\EasyAntiCheat
Perform a Selective Startup to determine whether a background application is interfering.
Press the Windows key
Type ‘msconfig’ and select ‘System Configuration’
On the ‘General’ tab, select ‘Selective Startup’
Deselect ‘Load startup Items’
Reboot your PC
If the issues no longer occur after having performed the Selective Startup, try re-introducing your programs one-by-one to determine which is causing your errors.
Install/Repair Easy Anti-Cheat:
Navigate to: C:\Program Files\Steam\steamapps\common\Warhammer Vermintide 2\installers\EasyAntiCheat
Run the EasyAntiCheat_Setup installer and proceed as instructed
Failing all of this, you could try a clean re-installation of Vermintide 2: