Django_Error：Cannot resolve keyword 'user_name' into field. Choices are: create_time

Cannot resolve keyword ‘user_name’ into field. Choices are: create_time, date_joined, email, first_name, groups, id, is_active, is_delete, is_staff, is_superuser, last_login, last_name, logentry, password, update_time, user_permissions, username

models文件中的username写成了user_name，只要修改一下就可以解决问题