clarkwinkelmann Domixo what version of MySQL do you have ? I suppose it fails at this migration https://github.com/flarum/core/blob/master/migrations/2015_09_22_030432_rename_notification_read_time.php but I don't know why the nullable type of the column disappears. Also I don't know if it's normal to get quotes around null in the query 🤔 Did you try removing all tables from the database and try again ? Maybe there was a previous error that broke the structure of the users table.
