Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/c28a2a3dffdfc621309e3029b5aedf61be72d99e/third-party/LCDMenuLib2/examples/00_beginners/LCDML_000_serialMonitor You should set ROOT_URL correctly, otherwise the web may not work correctly.