Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/OpenAudio_ArduinoLibrary/src/commit/4a0477a952dfafb7a705b21ed7a39ba90fcda76c/examples/TestFIRGeneralLarge4
You should set ROOT_URL correctly, otherwise the web may not work correctly.