Thread:Extension talk:Wikibase Repository/error during installation of WB repository

Hi! I've installed Wikibase repository and now everytime I go to anypage I see the following error: Unexpected non-MediaWiki exception encountered, of type "InvalidArgumentException" [5c32e309] /wikibase/index.php/Special:SpecialPages Exception from line 48 of /var/www/html/wikibase/extensions/Wikibase/repo/includes/GenericEventDispatcher.php: $listener must implement Wikibase\Lib\Store\EntityStoreWatcher