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/4861603cf895a1a2a1191b04914145c6b9726018/docs/scripts/ParsedInputs You should set ROOT_URL correctly, otherwise the web may not work correctly.