2.4.1 Elasticsearch configuration shows no product pages

[Sheba]

Using Magento 2.4.1.  Elasticsearch successfully installed and configured but product pages shows errors

Error: Call to a member function isAvailableForCompare() on null in /home/happysite/public_html/vendor/magento/module-catalog/view/frontend/templates/product/view/addto/compare.phtml:11 Stack trace: #0 
/home/happysite/public_html/vendor/magento/framework/View/TemplateEngine/Php.php(71): include() #1 
/home/happysite/public_html/vendor/magento/framework/View/Element/Template.php(273): Magento\Framework\View\TemplateEngine\Php->render(Object(Magento\Catalog\Block\Product\View\AddTo\Compare\Interceptor), '/home/happysite...', Array) #2 
/home/happysite/public_html/generated/code/Magento/Catalog/Block/Product/View/AddTo/Compare/Interceptor.php(392): Magento\Framework\View\Element\Template->fetchView('/home/happysite...') #3
 /home/happysite/public_html/vendor/magento/framework/View/Element/Template.php(303): Magento\Catalog\Block\Product\View\AddTo\Compare\Interceptor->fetchView('/home/happysite...') #4 
/home/happysite/public_html/vendor/magento/framework/View/Element/AbstractBlock.php(1111): Magento\Framework\View\Element\Template->_toHtml() #5 
/home/happysite/public_html/vendor/magento/framework/View/Element/AbstractBlock.php(1115): Magento\Framework\View\Element\AbstractBlock->Magento\Framework\View\Element\{closure}() #6

curl -XGET 'http://localhost:9200'
{
  "name" : "node-1",
  "cluster_name" : "my-application",
  "cluster_uuid" : "i removed info",
  "version" : {
    "number" : "7.10.1",
    "build_flavor" : "default",
    "build_type" : "rpm",
    "build_hash" : "i remove info",
    "build_date" : "2020-12-05T01:00:33.671820Z",
    "build_snapshot" : false,
    "lucene_version" : "8.7.0",
    "minimum_wire_compatibility_version" : "6.8.0",
    "minimum_index_compatibility_version" : "6.0.0-beta1"
  },
  "tagline" : "You Know, for Search"
}

[Sanjay Jethva]

Hello,

Please do let me know the version of elestic search.

For Magento 2.4.x, Elasticsearch 7.6.x is tested and recommended. 

Thank you.