Game crashes on Flanders map realistic game mode

Dear Technical Support Team!

I have been playing nearly a week in War Thunder and today I’ve met a strange problem.
I started the battle with ground forces and I got the Flanders map. But unfortunately the client was loading and loading and nothing happens, the battle didn’t start. I was waiting for ten minutes with the loading, I restarted the client two times, but in both cases I got the Flanders map and nothing happened.

Please help me if you can!

Thank you in advance!