Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/6b74d11b4da8c5b9364c0f7b4a01f36e68f107d1/third-party/template_mixer
You should set ROOT_URL correctly, otherwise the web may not work correctly.