Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/AutoConnect/src/commit/b173182058d091823b7cfdd45ee61b0adfc603c9/examples/mqttRSSI_NA
You should set ROOT_URL correctly, otherwise the web may not work correctly.
Hieromon Ikasamo