Fatal error:  Uncaught Error: Call to a member function toHtml() on boolean in /app/code/Mageplaza/LayeredNavigation/Controller/Search/Result/Index.php:132

#0 /public_html/generated/code/Mageplaza/LayeredNavigation/Controller/Search/Result/Index/Interceptor.php(24): MageplazaLayeredNavigationControllerSearchResultIndex->execute()
#1 /public_html/vendor/magento/framework/App/Action/Action.php(107): MageplazaLayeredNavigationControllerSearchResultIndexInterceptor->execute()
#2 /public_html/vendor/magento/framework/Interception/Interceptor.php(58): MagentoFrameworkAppActionAction->dispatch(Object(MagentoFrameworkAppRequestHttp))
#3 /public_html/vendor/magento/framework/Interception/Interceptor.php(138): MageplazaLayeredNavigationControllerSearchResultIndexInterceptor->___callParent('dispatch', Array)
#4 /public_html/vendor/magento/framework/Interception/Interceptor.php(153): MageplazaLayeredNa in /public_html/app/code/Mageplaza/LayeredNavigation/Controller/Search/Result/Index.php on line 132