Fixed internal server error for query urlResolver

Author: yogeshsuhagiya

app/code/Magento/UrlRewriteGraphQl/Model/Resolver/EntityUrl.php

@@ -8,6 +8,7 @@
 namespace Magento\UrlRewriteGraphQl\Model\Resolver;
 
 use Magento\Framework\GraphQl\Exception\GraphQlInputException;
+use Magento\Framework\GraphQl\Exception\GraphQlNoSuchEntityException;
 use Magento\Framework\GraphQl\Schema\Type\ResolveInfo;
 use Magento\Framework\GraphQl\Config\Element\Field;
 use Magento\Framework\GraphQl\Query\ResolverInterface;
@@ -73,6 +74,11 @@ public function resolve(
         $url = $customUrl ?: $url;
         $urlRewrite = $this->findCanonicalUrl($url);
         if ($urlRewrite) {
+            if (!$urlRewrite->getEntityId()) {
+                throw new GraphQlNoSuchEntityException(
+                    __('No such entity found with matching URL key: %url', ['url' => $url])
+                );
+            }
             $result = [
                 'id' => $urlRewrite->getEntityId(),
                 'canonical_url' => $urlRewrite->getTargetPath(),
@@ -99,6 +105,9 @@ private function findCanonicalUrl(string $requestPath) : ?\Magento\UrlRewrite\Se
         if (!$urlRewrite) {
             $urlRewrite = $this->findUrlFromTargetPath($requestPath);
         }
+        if (!$urlRewrite->getEntityId() && !$urlRewrite->getIsAutogenerated()) {
+            $urlRewrite = $this->findUrlFromTargetPath($urlRewrite->getTargetPath());
+        }
 
         return $urlRewrite;
     }