Fatal error: Uncaught Error: Interface "Wikibase\Repo\Rdf\ValueSnakRdfBuilder" not found in /home/floten1/q.tenbergen.ca/extensions/Math/src/MathMLRdfBuilder.php:9 Stack trace: #0 {main} thrown in /home/floten1/q.tenbergen.ca/extensions/Math/src/MathMLRdfBuilder.php on line 9