Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/97aeb8de320b03c13bb6c0ce89705f4e15f06070/third-party/ArduinoJson/extras/tests/Helpers/api 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.		3 years ago
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Print.h	Added new version of ArduinoJson.	3 years ago
Stream.h	Added new version of ArduinoJson.	3 years ago
String.h	Added new ArduinoJson library.	3 years ago