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/2863d1f240c3bd4aa7075a16f7b0510a5d1caeff/examples/FT8Transmit
You should set ROOT_URL correctly, otherwise the web may not work correctly.
boblark