Administrator Group deleted in Directory Utility, now not able to open Users&Groups in System Preferences!
I was trying to get admin rights for one of the users, when I unknowingly deleted the "Administrator Groups" record from the Directory Utility. Because of that I'm not able to open Users&Groups in System preferences too, as it freezes every time I try to open it. Please help!
MacBook Air 13″, macOS 10.15