12 players, missing Goalkeeper bug

[DiegoYYH14]

When I was doing the squad of the team, I went to change my left side but what happened was that I added one and the other did not leave, I now have 12 players on the field in the lining. My goalkeeper disappeared from under the crossbar and I can not rearrange to stay the correct way. I ask your help to fix this, because I like the game a lot and I will be very sad if I happen to be unable to play because of it.