Fatal error: Uncaught Error: Interface "Magento\Framework\Data\OptionSourceInterface" not found in /var/www/magento/html/app/code/BBNT/Cms/Model/Page/Source/ShowCanonicalUrl.php:16 Stack trace: #0 {main} thrown in /var/www/magento/html/app/code/BBNT/Cms/Model/Page/Source/ShowCanonicalUrl.php on line 16