Fatal error: Uncaught Error: Class "MediaWiki\WikiMap\WikiMap" not found in /var/www/html/extensions/SemanticMediaWiki/includes/GlobalFunctions.php:171
Stack trace:
#0 /var/www/html/extensions/SemanticMediaWiki/src/Localizer/LocalLanguage/JsonContentsFileReader.php(144): smwfCacheKey('smw:lang', Array)
#1 /var/www/html/extensions/SemanticMediaWiki/src/Localizer/LocalLanguage/LanguageContents.php(75): SMW\Localizer\LocalLanguage\JsonContentsFileReader->readByLanguageCode('de')
#2 /var/www/html/extensions/SemanticMediaWiki/src/Localizer/LocalLanguage/LocalLanguage.php(127): SMW\Localizer\LocalLanguage\LanguageContents->load('de')
#3 /var/www/html/extensions/SemanticMediaWiki/src/NamespaceManager.php(311): SMW\Localizer\LocalLanguage\LocalLanguage->fetch('de')
#4 /var/www/html/extensions/SemanticMediaWiki/src/NamespaceManager.php(199): SMW\NamespaceManager->getLocalLanguage('de')
#5 /var/www/html/extensions/SemanticMediaWiki/includes/SemanticMediaWiki.php(47): SMW\NamespaceManager::initCustomNamespace(Array)
#6 /var/www/html/includes/registration/ExtensionRegistry.php(527): SemanticMediaWiki::initExtension(Array)
#7 /var/www/html/includes/registration/ExtensionRegistry.php(279): ExtensionRegistry->exportExtractedData(Array)
#8 /var/www/html/includes/Setup.php(278): ExtensionRegistry->loadFromQueue()
#9 /var/www/html/includes/WebStart.php(86): require_once('/var/www/html/i...')
#10 /var/www/html/index.php(44): require('/var/www/html/i...')
#11 {main}
thrown in /var/www/html/extensions/SemanticMediaWiki/includes/GlobalFunctions.php on line 171