Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/f6f1360d17443622d1dcb9d30da8af19fb86a658/third-party/TeensyTimerTool/examples/02_Advanced/UsingLambdas
You should set ROOT_URL correctly, otherwise the web may not work correctly.