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/ecf5cae865c344b6fc06dc30a71f53c8408de3e2/docs/scripts/functions You should set ROOT_URL correctly, otherwise the web may not work correctly.