diff --git a/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDeviceManager.py b/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDeviceManager.py
index bacf52e649..8d35b41fa2 100644
--- a/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDeviceManager.py
+++ b/plugins/UM3NetworkPrinting/src/Cloud/CloudOutputDeviceManager.py
@@ -38,7 +38,7 @@ class CloudOutputDeviceManager:
         # Persistent dict containing the remote clusters for the authenticated user.
         self._remote_clusters = {}  # type: Dict[str, CloudOutputDevice]
         self._account = CuraApplication.getInstance().getCuraAPI().account  # type: Account
-        self._api = CloudApiClient(self._account, on_error = lambda error: Logger.log("e", error))
+        self._api = CloudApiClient(self._account, on_error = lambda error: Logger.log("e", str(error)))
         self._account.loginStateChanged.connect(self._onLoginStateChanged)
 
         # Create a timer to update the remote cluster list
diff --git a/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDevice.py b/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDevice.py
index a149b9f404..dd9c0a7d2a 100644
--- a/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDevice.py
+++ b/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDevice.py
@@ -169,5 +169,5 @@ class LocalClusterOutputDevice(UltimakerNetworkedPrinterOutputDevice):
     ## Get the API client instance.
     def _getApiClient(self) -> ClusterApiClient:
         if not self._cluster_api:
-            self._cluster_api = ClusterApiClient(self.address, on_error = lambda error: Logger.log("e", error))
+            self._cluster_api = ClusterApiClient(self.address, on_error = lambda error: Logger.log("e", str(error)))
         return self._cluster_api
diff --git a/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDeviceManager.py b/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDeviceManager.py
index 9422927a37..b725224d81 100644
--- a/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDeviceManager.py
+++ b/plugins/UM3NetworkPrinting/src/Network/LocalClusterOutputDeviceManager.py
@@ -67,7 +67,7 @@ class LocalClusterOutputDeviceManager:
 
     ## Add a networked printer manually by address.
     def addManualDevice(self, address: str, callback: Optional[Callable[[bool, str], None]] = None) -> None:
-        api_client = ClusterApiClient(address, lambda error: Logger.log("e", error))
+        api_client = ClusterApiClient(address, lambda error: Logger.log("e", str(error)))
         api_client.getSystem(lambda status: self._onCheckManualDeviceResponse(address, status, callback))
 
     ## Remove a manually added networked printer.