Fixed alias using full uri instead of just path in iven subscriber.

src/EventSubscriber/AliasSubscriber.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\minisite\EventSubscriber;
 
+use Drupal\Component\Utility\UrlHelper;
 use Drupal\minisite\Asset;
 use Symfony\Component\EventDispatcher\EventSubscriberInterface;
 use Symfony\Component\HttpKernel\Event\GetResponseEvent;
@@ -35,7 +36,8 @@ public function onRequestSetController(GetResponseEvent $event) {
     // be as "lightweight" as possible as it will run before any other routes
     // are considered (it is still faster to run this before all RouterListener
     // processing).
-    $asset = Asset::loadByAlias($request->getRequestUri());
+    $parsed_uri = UrlHelper::parse($request->getRequestUri());
+    $asset = Asset::loadByAlias($parsed_uri['path']);
     if ($asset) {
       $request->attributes->set('_controller', '\Drupal\minisite\Controller\AliasController::deliverAsset');
       $request->attributes->set('asset_id', $asset->id());

tests/src/Functional/MinisiteTestBase.php

@@ -517,6 +517,15 @@ public function browseFixtureMinisiteAliased($alias, $description, $assets_paths
 
     $this->assertText('Page 2');
     $this->assertUrl($alias . '/' . $assets_paths[2]);
+
+    // Navigate to the page using URL with a query.
+    $this->drupalGet($alias . '/' . $assets_paths[1], [
+      'query' => [
+        'param' => 'val',
+      ],
+      'fragment' => 'someid',
+    ]);
+    $this->assertResponse(200);
   }
 
 }