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/692f896de0492d44c6bd9f952d35b0f894654457/docs/scripts/Old You should set ROOT_URL correctly, otherwise the web may not work correctly.