[2020] Game crashed but it worked fine yesterday

Looks like an issue with a vehicle. Try enabling Safe Mode with the Loading Screen Mod (more details on that here) and make sure to also check the option to remove all vehicles. Hopefully that will do the trick.

Originally posted by glarcfan: @Avanya Thank you, I've tried your suggestions and successfully entered into the savegame.
But after I play for hours the vehicles start flickering, I'm not sure what causes this problem.

outputlog [www.dropbox.com]

Hmm, yeah something isn't quite right in that log. I see an error with Improved Public Transport 2, so try disabling it and load the save in Safe Mode again. Let the game run for a little bit and then upload the log from that test, and ofc let me know if there's any weird stuff happening still.