Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/OpenAudio_ArduinoLibrary/blame/commit/5115bb0c11a59235d1ab2c06e31cb8243a837ba4/examples/TestOutput_float/TestOutput_float.ino
You should set ROOT_URL correctly, otherwise the web may not work correctly.