Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/MicroDexed/src/commit/136fec3f86e6824e97802c3652c05ef5d76ce2c9/third-party/ArduinoJson/extras/tests/Deprecated You should set ROOT_URL correctly, otherwise the web may not work correctly.

Holger Wirtz be9fa9eda2 Several fixes: ... - moved "StaticJsonDocument<JSON_BUFFER_SIZE>" to JsonDocument as StaticJsonDocument is marked depriciated. - Fixed display_plus show()-method - Fixed string length for drumset sounds - Newer version of third-party libraries		1 year ago
..
BasicJsonDocument.cpp	Several fixes:	1 year ago
CMakeLists.txt	Several fixes:	1 year ago
DynamicJsonDocument.cpp	Several fixes:	1 year ago
StaticJsonDocument.cpp	Several fixes:	1 year ago
add.cpp	Several fixes:	1 year ago
createNestedArray.cpp	Several fixes:	1 year ago
createNestedObject.cpp	Several fixes:	1 year ago
macros.cpp	Several fixes:	1 year ago
memoryUsage.cpp	Several fixes:	1 year ago
shallowCopy.cpp	Several fixes:	1 year ago