Unreal engine 5 ai won't move anymore

Hi, I am new at unreal engine, but I had a little game that worked well in ue4, but now I opened it in ue5 and the ai won’t move. Basically I have this zombies that spawn around the map and immediately run at you to kill you, but now they just stand… I’m not sure what’s going on, when I place a print string for pawn sense and ai movement it prints out but it doesn’t move. Thanks in advance!