Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/music-synthesizer-for-android/src/commit/7a5706054e2dc4c860b748b7a83d8370f23aeb92/android/res/values
You should set ROOT_URL correctly, otherwise the web may not work correctly.