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/a63ead7a270fe02afda1dc6e89f89784b45ae5d3/examples/TestFIRGeneralLarge5
You should set ROOT_URL correctly, otherwise the web may not work correctly.