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/f220122ca82a716a921e95b86c6a4db8fba1ad0d/arduino/libraries/readme.txt You should set ROOT_URL correctly, otherwise the web may not work correctly.
 
 
 
 
 
 
esp-link/arduino/libraries/readme.txt

87 B

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