Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/AutoConnect/src/commit/3c0c1da99b978cda0ae0c33ba92b5559e73c8caf/examples/mqttRSSI/data
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Hieromon Ikasamo