Error: Fatal error: Cannot redeclare wfSetupImageMap() (previously declared in C:\xampp\htdocs\mediawiki\extensions\ImageMap\ImageMap.php:37) in C:\xampp\htdocs\mediawiki\extensions\BlueSpiceDistribution\ImageMap\ImageMap.php on line 40
Solution: We removed ImageMap from the BlueSpiceDistribution folder with BlueSpice 2.23.1 so this error won't occur in the future.