Your ROOT_URL in app.ini is https://source.parasitstudio.de:63000/ but you are visiting https://source.parasitstudio.de/wirtz/esp-link/src/commit/22664fa55ff4d621dda19c01c32daee8409a330e/arduino/libraries You should set ROOT_URL correctly, otherwise the web may not work correctly.
 
 
 
 
 
 
esp-link/arduino/libraries
cskarai c81aaa5b08 Fixed: WEB_JSON_DATA WEB_DATA change (uses SLIP protocol) 9 years ago
..
EspLink Fixed: WEB_JSON_DATA WEB_DATA change (uses SLIP protocol) 9 years ago
readme.txt Refactored arduino library 9 years ago

readme.txt

For information on installing libraries, see: http://www.arduino.cc/en/Guide/Libraries