diff --git a/gns3server/api/routes/compute/capabilities.py b/gns3server/api/routes/compute/capabilities.py
index f472f6231..42154d4e1 100644
--- a/gns3server/api/routes/compute/capabilities.py
+++ b/gns3server/api/routes/compute/capabilities.py
@@ -39,7 +39,8 @@ def get_capabilities(request: Request) -> dict:
         node_types.extend(module.node_types())
 
     # record the controller hostname or IP address
-    request.app.state.controller_host = request.client.host
+    if request.client:
+        request.app.state.controller_host = request.client.host
 
     return {
         "version": __version__,
diff --git a/gns3server/api/routes/compute/compute.py b/gns3server/api/routes/compute/compute.py
index 1a862787c..c98b1a256 100644
--- a/gns3server/api/routes/compute/compute.py
+++ b/gns3server/api/routes/compute/compute.py
@@ -163,7 +163,7 @@ def compute_statistics() -> dict:
 
 @router.get("/qemu/capabilities")
 async def get_qemu_capabilities() -> dict:
-    capabilities = {"kvm": []}
+    capabilities: dict[str, list] = {"kvm": []}
     kvms = await Qemu.get_kvm_archs()
     if kvms:
         capabilities["kvm"] = kvms
diff --git a/gns3server/api/routes/compute/notifications.py b/gns3server/api/routes/compute/notifications.py
index 2c6ca4ad5..ee533037b 100644
--- a/gns3server/api/routes/compute/notifications.py
+++ b/gns3server/api/routes/compute/notifications.py
@@ -39,14 +39,15 @@ async def project_ws_notifications(websocket: Union[None, WebSocket] = Depends(w
     """
 
     if websocket:
-        log.info(f"New client {websocket.client.host}:{websocket.client.port} has connected to compute WebSocket")
+        client = f"{websocket.client.host}:{websocket.client.port}" if websocket.client else "unknown"
+        log.info(f"New client {client} has connected to compute WebSocket")
         try:
             with NotificationManager.instance().queue() as queue:
                 while True:
                     notification = await queue.get_json(5)
                     await websocket.send_text(notification)
         except (ConnectionClosed, WebSocketDisconnect):
-            log.info(f"Client {websocket.client.host}:{websocket.client.port} has disconnected from compute WebSocket")
+            log.info(f"Client {client} has disconnected from compute WebSocket")
         except WebSocketException as e:
             log.warning(f"Error while sending to controller event to WebSocket client: {e}")
 
diff --git a/pyproject.toml b/pyproject.toml
index 98e3fead7..d6b0e6a67 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -304,9 +304,7 @@ module = [
   "gns3server.agent.mcp.appliances",  # 1
   "gns3server.agent.web_wireshark.docker_client",  # 5
   "gns3server.api.routes.compute.atm_switch_nodes",  # 9
-  "gns3server.api.routes.compute.capabilities",  # 1
   "gns3server.api.routes.compute.cloud_nodes",  # 14
-  "gns3server.api.routes.compute.compute",  # 1
   "gns3server.api.routes.compute.dependencies.authentication",  # 3
   "gns3server.api.routes.compute.docker_nodes",  # 26
   "gns3server.api.routes.compute.dynamips_nodes",  # 9
@@ -315,7 +313,6 @@ module = [
   "gns3server.api.routes.compute.frame_relay_switch_nodes",  # 9
   "gns3server.api.routes.compute.iou_nodes",  # 15
   "gns3server.api.routes.compute.nat_nodes",  # 10
-  "gns3server.api.routes.compute.notifications",  # 4
   "gns3server.api.routes.compute.projects",  # 7
   "gns3server.api.routes.compute.virtualbox_nodes",  # 20
   "gns3server.api.routes.compute.vmware_nodes",  # 10