Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/AutoConnect/src/commit/3ba2ed1335ca050f34868ffd0ac9afe9a2277fd7/mkdocs/images/AutoConnectAux.gif
You should set ROOT_URL correctly, otherwise the web may not work correctly.
