Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/a665de889f04b60a57be19d4fbe8147fa8d693ec/third-party/Bounce2/docs/files/sync_off.png
You should set ROOT_URL correctly, otherwise the web may not work correctly.