I have a problem updating the mediawiki version. Indeed I installed mediawiki 1.31.14 with BlueuSpice 3.2.1. I integrated Semantic Mediawiki version 3.1.6, everything goes very well, but once I have updated the system with "maintenance / update", the application does not start anymore and displays the message:
Fatal error: Uncaught Error: Class 'SkinChameleon' not found in /home/xxxxxx/example.com/skins/BlueSpiceCalumma/src/Skin.php:11.
If there is anyone who can help me i will be very happy