diff --git a/src/Content/Text/BBCode.php b/src/Content/Text/BBCode.php
index 62ad04a43..9be7def90 100644
--- a/src/Content/Text/BBCode.php
+++ b/src/Content/Text/BBCode.php
@@ -2599,7 +2599,7 @@ class BBCode
 		// Bypass attachment if parse url for a comment
 		if (!$tryAttachment) {
 			DI::profiler()->stopRecording();
-			return "\n" . '[url=' . $url . ']' . $siteinfo['title'] . '[/url]';
+			return "\n" . '[url=' . $url . ']' . ($siteinfo['title'] ?? $url) . '[/url]';
 		}
 
 		// Format it as BBCode attachment
diff --git a/src/Module/OStatus/Subscribe.php b/src/Module/OStatus/Subscribe.php
index 52bd19aef..da05cfa63 100644
--- a/src/Module/OStatus/Subscribe.php
+++ b/src/Module/OStatus/Subscribe.php
@@ -142,7 +142,7 @@ class Subscribe extends \Friendica\BaseModule
 		$o .= '<p>' . $counter . '/' . $total . ': ' . $url;
 
 		$probed = Contact::getByURL($url);
-		if (in_array($probed['network'], Protocol::FEDERATED)) {
+		if (!empty($probed['network']) && in_array($probed['network'], Protocol::FEDERATED)) {
 			$result = Contact::createFromProbeForUser($this->session->getLocalUserId(), $probed['url']);
 			if ($result['success']) {
 				$o .= ' - ' . $this->t('success');
diff --git a/src/Module/Photo.php b/src/Module/Photo.php
index 5f1d65845..35348be70 100644
--- a/src/Module/Photo.php
+++ b/src/Module/Photo.php
@@ -377,7 +377,7 @@ class Photo extends BaseModule
 						$url = Contact::getDefaultAvatar($contact ?: [], Proxy::SIZE_SMALL);
 					}
 				}
-				return MPhoto::createPhotoForExternalResource($url, 0, $mimetext, $contact['blurhash'], $customsize, $customsize);
+				return MPhoto::createPhotoForExternalResource($url, 0, $mimetext, $contact['blurhash'] ?? null, $customsize, $customsize);
 			case 'header':
 				$fields = ['uid', 'url', 'header', 'network', 'gsid'];
 				$contact = Contact::getById($id, $fields);