Fatal error: Uncaught Error: Undefined class constant 'SHOPBY_SWITCHER_STORE_ID' in /data/web/magento2/vendor/amasty/shopby-seo/Helper/Url.php:239 Stack trace: #0 /data/web/magento2/vendor/amasty/shopby-seo/Helper/Url.php(147): Amasty\ShopbySeo\Helper\Url->initialize('https://www.be....') #1 /data/web/magento2/generated/code/Amasty/ShopbySeo/Helper/Url/Interceptor.php(37): Amasty\ShopbySeo\Helper\Url->seofyUrl('https://www.be....') #2 /data/web/magento2/vendor/amasty/shopby-seo/Model/UrlModifier.php(33): Amasty\ShopbySeo\Helper\Url\Interceptor->seofyUrl('https://www.be....') #3 /data/web/magento2/vendor/amasty/module-shop-by-base/Model/UrlBuilder.php(77): Amasty\ShopbySeo\Model\UrlModifier->modifyUrl('https://www.be....') #4 /data/web/magento2/vendor/amasty/shopby-seo/Model/Customizer/Category/Seo.php(281): Amasty\ShopbyBase\Model\UrlBuilder->getCurrentUrl() #5 /data/web/magento2/vendor/amasty/module-shop-by-base/Model/Customizer/Category.php(49): Amasty\ShopbySeo\Model\Customizer\Category\Seo->prepareData(Object(Magento\ in /data/web/magento2/vendor/amasty/shopby-seo/Helper/Url.php on line 239