Since trying to open my mods, can't get into game anymore

I get the following message now: "Connection Error! Please Rejoin the server. .. reconnecting .."
What does this mean? What might I have done wrong?
EDIT: I just decided to uninstall and reinstall the game, I can now get back in. Mods I will have to try again later.

 

I had the same issue Because I had BeamMP files in the main mods folder.
Deleted those files and it started to work for me.

 

I wouldn't have known that affected the game. Thanks for sharing. I'll know for next time.