Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/a0d3fee52f6c4ef586282fd5d6753821bf593304/third-party/ArduinoJson/examples You should set ROOT_URL correctly, otherwise the web may not work correctly.

Holger Wirtz a0d3fee52f Added new ArduinoJson library. ... Disabled drum menus when drums not enabled. Replaced all strcpy(),strncpy(),strcat(),strncat() against strlcpy()/strlcat.		2 years ago
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JsonConfigFile	…
JsonFilterExample	Added new ArduinoJson library.	2 years ago
JsonGeneratorExample	…
JsonHttpClient	…
JsonParserExample	…
JsonServer	…
JsonUdpBeacon	…
MsgPackParser	…
ProgmemExample	Added new ArduinoJson library.	2 years ago
StringExample	Added new ArduinoJson library.	2 years ago