Waiting for players glitch

I recently have been running into a bug where when I load a mission sometimes it gets stuck on the “waiting for players” screen. I didn't know how to fix this so I would close my game and re open but then I would have to go through the queue again. I think I just found the solution so others who come across this can get through it. I was mashing buttons because I was frustrated and I hit session marked and it went away lol