Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/esp-link/src/commit/7fea51185a6f61f3c3bb673f3ccdfc12eff94288/user
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Benjamin Runnels