diff --git a/composer.lock b/composer.lock
index c5c83d6e4..c94bb296a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -16516,16 +16516,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "11.5.2",
+            "version": "11.5.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "153d0531b9f7e883c5053160cad6dd5ac28140b3"
+                "reference": "30e319e578a7b5da3543073e30002bf82042f701"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/153d0531b9f7e883c5053160cad6dd5ac28140b3",
-                "reference": "153d0531b9f7e883c5053160cad6dd5ac28140b3",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/30e319e578a7b5da3543073e30002bf82042f701",
+                "reference": "30e319e578a7b5da3543073e30002bf82042f701",
                 "shasum": ""
             },
             "require": {
@@ -16546,7 +16546,7 @@
                 "phpunit/php-timer": "^7.0.1",
                 "sebastian/cli-parser": "^3.0.2",
                 "sebastian/code-unit": "^3.0.2",
-                "sebastian/comparator": "^6.2.1",
+                "sebastian/comparator": "^6.3.0",
                 "sebastian/diff": "^6.0.2",
                 "sebastian/environment": "^7.2.0",
                 "sebastian/exporter": "^6.3.0",
@@ -16597,7 +16597,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/11.5.2"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/11.5.3"
             },
             "funding": [
                 {
@@ -16613,7 +16613,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2024-12-21T05:51:08+00:00"
+            "time": "2025-01-13T09:36:00+00:00"
         },
         {
             "name": "sebastian/cli-parser",
@@ -18111,7 +18111,7 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": {},
+    "stability-flags": [],
     "prefer-stable": true,
     "prefer-lowest": false,
     "platform": {
@@ -18127,6 +18127,6 @@
         "ext-openssl": "*",
         "ext-redis": "*"
     },
-    "platform-dev": {},
-    "plugin-api-version": "2.6.0"
+    "platform-dev": [],
+    "plugin-api-version": "2.3.0"
 }
diff --git a/src/MessageHandler/ActivityPub/Inbox/ActivityHandler.php b/src/MessageHandler/ActivityPub/Inbox/ActivityHandler.php
index 3ca978e38..bb12637b3 100644
--- a/src/MessageHandler/ActivityPub/Inbox/ActivityHandler.php
+++ b/src/MessageHandler/ActivityPub/Inbox/ActivityHandler.php
@@ -67,8 +67,10 @@ public function doWork(MessageInterface $message): void
         $payload = @json_decode($message->payload, true);
 
         if (null === $payload) {
-            $this->logger->warning('[ActivityHandler::doWork] Activity message from was empty: {json}, ignoring it', ['json' => json_encode($message->payload)]);
-            throw new UnrecoverableMessageHandlingException('activity message from was empty');
+            $this->logger->warning('[ActivityHandler::doWork] Activity message from was empty or invalid JSON. Truncated content: {content}, ignoring it', [
+                'content' => substr($message->payload ?? 'No payload provided', 0, 200),
+            ]);
+            throw new UnrecoverableMessageHandlingException('Activity message from was empty or invalid JSON');
         }
 
         if ($message->request && $message->headers) {
@@ -93,7 +95,7 @@ public function doWork(MessageInterface $message): void
 
         if (null === $payload['id']) {
             $this->logger->warning('[ActivityHandler::doWork] Activity message has no id field which is required: {json}', ['json' => json_encode($message->payload)]);
-            throw new UnrecoverableMessageHandlingException('activity message has no id field');
+            throw new UnrecoverableMessageHandlingException('Activity message has no id field');
         }
 
         $idHost = parse_url($payload['id'], PHP_URL_HOST);