diff --git a/src/Model/Contact.php b/src/Model/Contact.php
index a7dfa08dcf..faa3e85cf0 100644
--- a/src/Model/Contact.php
+++ b/src/Model/Contact.php
@@ -3357,6 +3357,16 @@ class Contact
 				'writable' => 1,
 			]);
 
+			if (!$contact_id) {
+				DI::logger()->warning('Contact had not been added', ['url' => $url, 'uid' => $importer['uid']]);
+				$contact_record = DBA::selectFirst('contact', ['id'], ['nurl' => Strings::normaliseLink($url), 'uid' => $importer['uid']]);
+				if (empty($contact_record['id'])) {
+					DI::logger()->error('Contact had not been found', ['url' => $url, 'uid' => $importer['uid']]);
+					return null;
+				}
+				$contact_id = $contact_record['id'];
+			}
+
 			// Ensure to always have the correct network type, independent from the connection request method
 			self::updateFromProbe($contact_id);
 
diff --git a/src/Model/GServer.php b/src/Model/GServer.php
index d78d9ecbcb..efbe706844 100644
--- a/src/Model/GServer.php
+++ b/src/Model/GServer.php
@@ -1874,6 +1874,11 @@ class GServer
 			return $serverdata;
 		}
 
+		if (!is_countable($data)) {
+			DI::logger()->notice('Unexpected return type', ['url' => $url, 'data' => $data, 'serverdata' => $serverdata]);
+			return $serverdata;
+		}
+
 		if (count($data) == 1) {
 			$serverdata['directory-type'] = self::DT_MASTODON;
 		}
diff --git a/src/Model/Post/Media.php b/src/Model/Post/Media.php
index 7384f71ca5..3cf0ce0e7d 100644
--- a/src/Model/Post/Media.php
+++ b/src/Model/Post/Media.php
@@ -280,8 +280,8 @@ class Media
 			// When the original picture is potentially animated but the preview isn't, we override the preview
 			if (in_array($media['mimetype'] ?? '', ['image/gif', 'image/png']) && !in_array($imagedata['mime'], ['image/gif', 'image/png'])) {
 				$media['preview']        = $media['url'];
-				$media['preview-width']  = $media['width'];
-				$media['preview-height'] = $media['height'];
+				$media['preview-width']  = $media['width']  ?? $imagedata[0];
+				$media['preview-height'] = $media['height'] ?? $imagedata[1];
 				return $media;
 			}
 
diff --git a/src/Protocol/ActivityPub/Processor.php b/src/Protocol/ActivityPub/Processor.php
index cc5fa584aa..f09b5a2e07 100644
--- a/src/Protocol/ActivityPub/Processor.php
+++ b/src/Protocol/ActivityPub/Processor.php
@@ -215,7 +215,7 @@ class Processor
 	 */
 	public static function updateItem(array $activity)
 	{
-		$item = Post::selectFirst(['uri', 'uri-id', 'thr-parent', 'gravity', 'post-type', 'private'], ['uri' => $activity['id']]);
+		$item = Post::selectFirst(['uri', 'uri-id', 'guid', 'thr-parent', 'gravity', 'post-type', 'private'], ['uri' => $activity['id']]);
 		if (!DBA::isResult($item)) {
 			DI::logger()->notice('No existing item, item will be created', ['uri' => $activity['id']]);
 			$item = self::createItem($activity, false);
diff --git a/view/lang/C/messages.po b/view/lang/C/messages.po
index 086ee806db..05c0e9b7f4 100644
--- a/view/lang/C/messages.po
+++ b/view/lang/C/messages.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: 2025.02-dev\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2025-01-23 14:27+0000\n"
+"POT-Creation-Date: 2025-01-23 21:29+0000\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"