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/ed9b11186c7f7cf8f4e8e4ee77aab32ba05a73ba/user
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Benjamin Runnels