Change Password Without the Use of Email Address

I haven’t been using my Nextcloud for a week’s time. Today when I logged in, it stated I need to change my password through my email address. However, I didn’t set up an email address for any accounts in my Nextcloud. Even worse, I disable the default admin account.

I wonder if there’s still a way to get into the system. Please advise, thanks.

As an adminstrator you can SSH to your server and use the occ tool to reset a password.