diff --git a/src/Protocol/ATProtocol/Processor.php b/src/Protocol/ATProtocol/Processor.php
index 737112ec4c..852d21919d 100755
--- a/src/Protocol/ATProtocol/Processor.php
+++ b/src/Protocol/ATProtocol/Processor.php
@@ -176,7 +176,7 @@ class Processor
 			if ($id) {
 				$this->logger->info('Post inserted', ['id' => $id, 'guid' => $item['guid']]);
 			} elseif (Post::exists(['uid' => $uid, 'uri-id' => $item['uri-id']])) {
-				$this->logger->warning('Post was found', ['guid' => $item['guid'], 'uri' => $item['uri']]);
+				$this->logger->notice('Post was found', ['guid' => $item['guid'], 'uri' => $item['uri']]);
 			} else {
 				$this->logger->warning('Post was not inserted', ['guid' => $item['guid'], 'uri' => $item['uri']]);
 			}
@@ -206,7 +206,7 @@ class Processor
 			if ($id) {
 				$this->logger->info('Repost inserted', ['id' => $id]);
 			} elseif (Post::exists(['uid' => $uid, 'uri-id' => $item['uri-id']])) {
-				$this->logger->warning('Repost was found', ['uri' => $item['uri']]);
+				$this->logger->notice('Repost was found', ['uri' => $item['uri']]);
 			} else {
 				$this->logger->warning('Repost was not inserted', ['uri' => $item['uri']]);
 			}
@@ -235,7 +235,7 @@ class Processor
 			if ($id) {
 				$this->logger->info('Like inserted', ['id' => $id]);
 			} elseif (Post::exists(['uid' => $uid, 'uri-id' => $item['uri-id']])) {
-				$this->logger->warning('Like was found', ['uri' => $item['uri']]);
+				$this->logger->notice('Like was found', ['uri' => $item['uri']]);
 			} else {
 				$this->logger->warning('Like was not inserted', ['uri' => $item['uri']]);
 			}
@@ -315,7 +315,7 @@ class Processor
 		if ($id) {
 			$this->logger->info('Fetched post inserted', ['id' => $id, 'guid' => $item['guid']]);
 		} elseif (Post::exists(['uid' => $uid, 'uri-id' => $item['uri-id']])) {
-			$this->logger->warning('Fetched post was found', ['guid' => $item['guid'], 'uri' => $item['uri']]);
+			$this->logger->notice('Fetched post was found', ['guid' => $item['guid'], 'uri' => $item['uri']]);
 		} else {
 			$this->logger->warning('Fetched post was not inserted', ['guid' => $item['guid'], 'uri' => $item['uri']]);
 		}
diff --git a/src/Protocol/ActivityPub/Delivery.php b/src/Protocol/ActivityPub/Delivery.php
index 7a7d484b8d..d49e31de25 100644
--- a/src/Protocol/ActivityPub/Delivery.php
+++ b/src/Protocol/ActivityPub/Delivery.php
@@ -161,7 +161,7 @@ class Delivery
 
 					}
 
-					Logger::notice('Delivery failed', ['retcode' => $response->getReturnCode(), 'serverfailure' => $serverfail, 'drop' => $drop, 'runtime' => round($runtime, 3), 'uri-id' => $uri_id, 'uid' => $uid, 'item_id' => $item_id, 'cmd' => $cmd, 'inbox' => $inbox]);
+					Logger::notice('Delivery failed', ['retcode' => $response->getReturnCode() ?? 0, 'serverfailure' => $serverfail, 'drop' => $drop, 'runtime' => round($runtime, 3), 'uri-id' => $uri_id, 'uid' => $uid, 'item_id' => $item_id, 'cmd' => $cmd, 'inbox' => $inbox]);
 				}
 				if ($uri_id) {
 					if ($success) {
diff --git a/src/Util/JsonLD.php b/src/Util/JsonLD.php
index 1ee5c0920e..74f6e4baca 100644
--- a/src/Util/JsonLD.php
+++ b/src/Util/JsonLD.php
@@ -127,7 +127,6 @@ class JsonLD
 				$messages[] = $currentException->getMessage();
 			} while ($currentException = $currentException->getPrevious());
 
-			Logger::warning('JsonLD normalize error');
 			Logger::notice('JsonLD normalize error', ['messages' => $messages]);
 			Logger::info('JsonLD normalize error', ['trace' => $e->getTraceAsString()]);
 			Logger::debug('JsonLD normalize error', ['jsonobj' => $jsonobj]);
diff --git a/src/Worker/Notifier.php b/src/Worker/Notifier.php
index 438c0e5e77..e32df57106 100644
--- a/src/Worker/Notifier.php
+++ b/src/Worker/Notifier.php
@@ -451,6 +451,10 @@ class Notifier
 			}
 
 			$cdata = Contact::getPublicAndUserContactID($contact['id'], $sender_uid);
+			if (empty($cdata)) {
+				Logger::info('No contact entry found', ['id' => $contact['id'], 'uid' => $sender_uid]);
+				continue;
+			}
 			if (in_array($cdata['public'] ?: $contact['id'], $ap_contacts)) {
 				Logger::info('The public contact is already delivered via AP, so skip delivery via legacy DFRN/Diaspora', ['batch' => $in_batch, 'target' => $post_uriid, 'uid' => $sender_uid, 'contact' => $contact['url']]);
 				continue;
@@ -637,8 +641,8 @@ class Notifier
 	private static function activityPubDelivery($cmd, array $target_item, array $parent, array $thr_parent, int $priority, string $created, array $recipients): array
 	{
 		// Don't deliver via AP when the starting post isn't from a federated network
-		if (!in_array($parent['network'], Protocol::FEDERATED)) {
-			Logger::info('Parent network is no federated network, so no AP delivery', ['network' => $parent['network']]);
+		if (!in_array($parent['network'] ?? '', Protocol::FEDERATED)) {
+			Logger::info('Parent network is no federated network, so no AP delivery', ['network' => $parent['network'] ?? '']);
 			return ['count' => 0, 'contacts' => []];
 		}