Error Code?

I keep getting an error saying that I have left my fire team because “my fire team has changed”. WHAT THE HECK DOES THAT MEAN!!! I’ve gotten kicked from 10+ matches already… Has anyone else had this issue? It’s really starting to piss me off. I’m not a quitter and I hate that I can just randomly get pulled from a match when there is no lag and I never select the quit button. wtf