Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/fecebf1b4a7f402273acb559c88a061a285e6695/third-party/LiquidCrystal_I2C/examples/CustomChars
You should set ROOT_URL correctly, otherwise the web may not work correctly.
