Did anyone find a solution? I upgraded to Big Sur and since then I am not able to login. After I enter my local admin account password, it takes me to login screen again which looks like a mobile account login. Somehow my local account is messed and my mac is considering it to be a network account which is why it takes my password and brings back to same screen with a message 'Your password is required to login' I tried SMC reset, PRAM reset, reinstallation nothing works