Fatal error: Uncaught Error: Class 'SMW\Query\Language\Description' not found in /home/mapeador/solecov2/w/extensions/SemanticMediaWiki/src/Query/Language/ClassDescription.php:20 Stack trace: #0 {main} thrown in /home/mapeador/solecov2/w/extensions/SemanticMediaWiki/src/Query/Language/ClassDescription.php on line 20