Problem with Maintenance-Mode in Frontend

Hello Forum

If i am logged in to the Backend of my shop and go to the frontend of one of my stores, then i still see the Maintenance-Message and not the store.

Point is, i used the Upgrade-Script of Opencart to upgrade from 1.5.6, maybe some leftovers from there?

OC-Version: 2.3.0.2

Thanks to all

We always suggest that if you're upgrading from 1.5.x to 2.x, it's a good time just to do a rebuild in the latest version.