Fix attributepage no buckets error

Plugin/CatalogSearch/Model/Adapter/Aggregation/Checker/Query/CatalogView.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace Swissup\SearchMysqlLegacy\Plugin\CatalogSearch\Model\Adapter\Aggregation\Checker\Query;
+
+class CatalogView
+{
+    /**
+     * @var \Magento\Framework\App\RequestInterface
+     */
+    private $request;
+
+    /**
+     *
+     * @param \Magento\Framework\App\RequestInterface $request
+     */
+    public function __construct(
+        \Magento\Framework\App\RequestInterface $request
+    ) {
+        $this->request = $request;
+    }
+
+    /**
+     *
+     * @return boolean
+     */
+    protected function isAttributePage()
+    {
+        return $this->request->getFullActionName() === 'attributepages_page_view';
+    }
+
+    /**
+     *
+     * @param  \Magento\CatalogSearch\Model\Adapter\Aggregation\Checker\Query\CatalogView $subject
+     * @param  boolean $result
+     * @return boolean
+     */
+    public function afterIsApplicable(
+        \Magento\CatalogSearch\Model\Adapter\Aggregation\Checker\Query\CatalogView $subject,
+        $result
+    ) {
+
+        if ($this->isAttributePage()) {
+            $result = true;
+        }
+
+        return $result;
+    }
+}

etc/di.xml

@@ -293,4 +293,9 @@
     <type name="Magento\CatalogSearch\Model\ResourceModel\Fulltext\Collection">
        <plugin name="load_entities_legacy_mysql" type="Swissup\SearchMysqlLegacy\Plugin\CatalogSearch\Model\ResourceModel\Fulltext\Collection" />
     </type>
+
+    <type name="Magento\CatalogSearch\Model\Adapter\Aggregation\Checker\Query\CatalogView">
+       <plugin name="is_applicable" type="Swissup\SearchMysqlLegacy\Plugin\CatalogSearch\Model\Adapter\Aggregation\Checker\Query\CatalogView" />
+    </type>
+
 </config>