I have a Flask-Admin project set up with Flask-Security as well. It is pretty much https://pythonhosted.org/Flask-Security/quickstart.html#id1 but just more advanced. I can access the login page at localhost/login and logout and localhost/logout. The logging in and logging out works.
The templates for Flask-Admin works and everything is displayed as I'd expect. However, there are no templates on my machine or docker container where the Flask-Admin app is run. I installed Flask by running pip install Flask-Admin. I know I can over ride the security log in by adding something like
SECURITY_LOGIN_USER_TEMPLATE = 'security/login_user.html'
to the config file and uploading to /templates/security/login_user.html. There is also using
{%extends base.html}
to have a common theme. Should I have template files already in my project?