diff --git a/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php b/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php
index be71e0ee..eee2127a 100644
--- a/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php
+++ b/modules/islandora_iiif/src/Plugin/views/style/IIIFManifest.php
@@ -186,7 +186,7 @@ class IIIFManifest extends StylePluginBase {
         foreach ($images as $image) {
           // Create the IIIF URL for this file
           // Visiting $iiif_url will resolve to the info.json for the image.
-          $file_url = $image->entity->toUrl();
+          $file_url = $image->entity->toUrl()->toString();
           $mime_type = $image->entity->getMimeType();
           $iiif_url = rtrim($iiif_address, '/') . '/' . urlencode($file_url);
 
diff --git a/src/Form/IslandoraSettingsForm.php b/src/Form/IslandoraSettingsForm.php
index af1cdf2a..72ebf11d 100644
--- a/src/Form/IslandoraSettingsForm.php
+++ b/src/Form/IslandoraSettingsForm.php
@@ -7,6 +7,7 @@ use Drupal\Core\Entity\EntityTypeBundleInfoInterface;
 use Drupal\Core\Form\ConfigFormBase;
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\Core\Site\Settings;
+use Drupal\Core\Url;
 use GuzzleHttp\Exception\ConnectException;
 use Islandora\Crayfish\Commons\Client\GeminiClient;
 use Stomp\Client;
@@ -271,6 +272,7 @@ class IslandoraSettingsForm extends ConfigFormBase {
     $geminiUrlValue = trim($form_state->getValue(self::GEMINI_URL));
     if (!empty($geminiUrlValue)) {
       try {
+        $geminiUrl = Url::fromUri($geminiUrlValue);
         $client = GeminiClient::create($geminiUrlValue, $this->logger('islandora'));
         $client->findByUri('http://example.org');
       }
diff --git a/tests/src/Functional/JsonldSelfReferenceReactionTest.php b/tests/src/Functional/JsonldSelfReferenceReactionTest.php
index e1c5493c..f3c88271 100644
--- a/tests/src/Functional/JsonldSelfReferenceReactionTest.php
+++ b/tests/src/Functional/JsonldSelfReferenceReactionTest.php
@@ -153,7 +153,7 @@ class JsonldSelfReferenceReactionTest extends IslandoraFunctionalTestBase {
     $reaction_id = 'islandora_map_uri_predicate';
 
     list($file, $media) = $this->makeMediaAndFile($account);
-    $media_url = $media->toUrl('canonical', ['absolute' => TRUE]);
+    $media_url = $media->toUrl('canonical', ['absolute' => TRUE])->toString();
     $file_url = $file->createFileUrl(FALSE);
 
     $this->drupalGet($media_url);