Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/c8ea230e4b0bc6bc8bbf0c2842dc89bb7189c641/third-party/ArduinoJson/examples/MsgPackParser You should set ROOT_URL correctly, otherwise the web may not work correctly.