Need help with Advanced Rules.

I have managed to get into Advanced Rules for Serbian League Rules, I have changed the rules for Serbian Super league (updated it to 2 U-21 Players in playing squad), when trying to test the Rules, I get the Error “Team XXXX has no squad selected for Prva Liga Srbija match on 2/8/2025."



I am making changes only for Mozzart Bet Super league, and the game is testing rules for division under also. I understand I could remove Prva Liga Srbije but I kind of need it for save :/

How can I resolve this? 🙂