Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/AutoConnect/src/commit/38a1f8c7d11c9f505be6e15e6f3b391c0d7c02ae/examples/mqttRSSI/data
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Hieromon Ikasamo