fix breadcrumb

src/Controller/BreadcrumbController.php

@@ -3,6 +3,7 @@
 namespace Drupal\breadcrumb_builder\Controller;
 
 use Drupal\Core\Cache\CacheableJsonResponse;
+use Drupal\Core\Cache\CacheableMetadata;
 use Drupal\Core\Controller\ControllerBase;
 use Drupal\breadcrumb_builder\BreadcrumbsManager;
 use Drupal\breadcrumb_builder\BreadcrumbResult;
@@ -27,15 +28,15 @@ public static function create(ContainerInterface $container) {
       $container->get('breadcrumb_builder.route_match_builder')
     );
   }
-  
+
   public function build(Request $request) {
     $path = $request->query->get('path');
-  
+
     $route_match = $this->routeMatchBuilder->getRouteMatchForPath($path);
-    $result = $this->breadcrumbManager->build($route_match);
-    
+    $result = $route_match ? $this->breadcrumbManager->build($route_match) : NULL;
+
     $response = CacheableJsonResponse::create($result->getResult());
-    $response->addCacheableDependency($result);  
+    $response->addCacheableDependency($result);
 
     return $response;
   }

src/PathBreadcrumbBuilder.php

@@ -20,13 +20,13 @@ public function __construct(BreadcrumbsManager $breadcrumbManager, TitleResolver
     $this->pathValidator = $pathValidator;
     $this->routeMatchBuilder = $routeMatchBuilder;
   }
-  
+
   /**
    * {@inheritdoc}
    */
   public function applies(RouteMatchInterface $route_match) {
     return TRUE;
-  } 
+  }
 
   /**
    * {@inheritdoc}
@@ -62,16 +62,15 @@ public function build(RouteMatchInterface $route_match) {
         }
       }
     }
-
     $route_request = $this->routeMatchBuilder->getRequestForPath('/' . implode('/', $path_elements), $exclude);
+
     if ($route_request) {
       $route_match = RouteMatch::createFromRequest($route_request);
 
       $title = $this->getTitle($route_request, $route_match, end($path_elements));
-      
+
       $url = Url::fromRouteMatch($route_match)->toString(TRUE);
       $result->addCacheableDependency($url);
-
       $result->addResultItem([
         'url' => $url->getGeneratedUrl(),
         'title' => $title,
@@ -91,4 +90,4 @@ protected function getTitle($request, $route_match, $path_element) {
 
     return $title;
   }
-}
+}

src/RouteMatchBuilder.php

@@ -2,9 +2,13 @@
 
 namespace Drupal\breadcrumb_builder;
 
+use Drupal\Core\ParamConverter\ParamNotConvertedException;
 use Drupal\Core\PathProcessor\InboundPathProcessorInterface;
 use Drupal\Core\Routing\RouteMatch;
 use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
+use Symfony\Component\Routing\Exception\MethodNotAllowedException;
+use Symfony\Component\Routing\Exception\ResourceNotFoundException;
 use Symfony\Component\Routing\RouterInterface;
 
 class RouteMatchBuilder {
@@ -29,6 +33,7 @@ public function getRequestForPath($path, array $exclude = []) {
     // Find the system path by resolving aliases, language prefix, etc.
     $processed = $this->pathProcessor->processInbound($path, $request);
 
+
     // Attempt to match this path to provide a fully built request.
     try {
       $request->attributes->add($this->router->matchRequest($request));
@@ -50,6 +55,6 @@ public function getRequestForPath($path, array $exclude = []) {
 
   public function getRouteMatchForPath($path, array $exclude = []) {
     $request = $this->getRequestForPath($path, $exclude);
-    return RouteMatch::createFromRequest($request);
+    return $request ? RouteMatch::createFromRequest($request) : NULL;
   }
-}
+}