#33220 Corrected the observer class in events.xml

Author: bgorski

app/code/Magento/CatalogSearch/etc/frontend/events.xml

@@ -7,9 +7,9 @@
 -->
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
     <event name="controller_action_predispatch_catalogsearch_advanced_result">
-        <observer name="catalog_sort_param_memorization" instance="Magento\Catalog\Observer\ToolbarMemoriserObserver"/>
+        <observer name="catalog_sort_param_memorization" instance="Magento\CatalogSearch\Observer\ToolbarMemorizerObserver"/>
     </event>
     <event name="controller_action_predispatch_catalogsearch_result_index">
-        <observer name="catalog_sort_param_memorization" instance="Magento\Catalog\Observer\ToolbarMemoriserObserver"/>
+        <observer name="catalog_sort_param_memorization" instance="Magento\CatalogSearch\Observer\ToolbarMemorizerObserver"/>
     </event>
 </config>