Never used modes and verified integrity of game file
No additional apps
Restarted game and PC
Was it your first time trying Multiplayer? - No. Playesd alot in myltiplayer, today is first time this problem occurred when joining the weekly event race.
Which platform you are on - Steam
Your relevant Steam ID/PSN ID/Gamertag so we can check further. - https://steamcommunity.com/profiles/76561198024501986
If you're on Steam, can you let us know what version of Windows you are on - Windows 10 Pro - version 1803