diff --git a/gns3server/api/routes/controller/computes.py b/gns3server/api/routes/controller/computes.py
index b1173eba7..c62c859ac 100644
--- a/gns3server/api/routes/controller/computes.py
+++ b/gns3server/api/routes/controller/computes.py
@@ -23,6 +23,7 @@ from typing import Any, List, Union, Optional
 from uuid import UUID
 
 from gns3server.controller import Controller
+import gns3server.db.models as models
 from gns3server.db.repositories.computes import ComputesRepository
 from gns3server.db.repositories.rbac import RbacRepository
 from gns3server.services.computes import ComputesService
@@ -31,7 +32,7 @@ from gns3server import schemas
 from .dependencies.database import get_repository
 from .dependencies.rbac import has_privilege
 
-responses = {404: {"model": schemas.ErrorMessage, "description": "Compute not found"}}
+responses: dict[int | str, dict[str, Any]] = {404: {"model": schemas.ErrorMessage, "description": "Compute not found"}}
 
 router = APIRouter(responses=responses)
 
@@ -51,14 +52,14 @@ async def create_compute(
     compute_create: schemas.ComputeCreate,
     computes_repo: ComputesRepository = Depends(get_repository(ComputesRepository)),
     connect: Optional[bool] = False,
-) -> schemas.Compute:
+) -> models.Compute:
     """
     Create a new compute on the controller.
 
     Required privilege: Compute.Allocate
     """
 
-    return await ComputesService(computes_repo).create_compute(compute_create, connect)
+    return await ComputesService(computes_repo).create_compute(compute_create, bool(connect))
 
 
 @router.post(
@@ -86,7 +87,7 @@ async def connect_compute(compute_id: Union[str, UUID]) -> None:
 )
 async def get_compute(
     compute_id: Union[str, UUID], computes_repo: ComputesRepository = Depends(get_repository(ComputesRepository))
-) -> schemas.Compute:
+) -> Union[models.Compute, dict]:
     """
     Return a compute from the controller.
 
@@ -104,7 +105,7 @@ async def get_compute(
 )
 async def get_computes(
     computes_repo: ComputesRepository = Depends(get_repository(ComputesRepository)),
-) -> List[schemas.Compute]:
+) -> List[models.Compute]:
     """
     Return all computes known by the controller.
 
@@ -124,7 +125,7 @@ async def update_compute(
     compute_id: Union[str, UUID],
     compute_update: schemas.ComputeUpdate,
     computes_repo: ComputesRepository = Depends(get_repository(ComputesRepository)),
-) -> schemas.Compute:
+) -> models.Compute:
     """
     Update a compute on the controller.
 
diff --git a/gns3server/api/routes/controller/controller.py b/gns3server/api/routes/controller/controller.py
index 843cad739..3afd00a77 100644
--- a/gns3server/api/routes/controller/controller.py
+++ b/gns3server/api/routes/controller/controller.py
@@ -20,7 +20,7 @@ import os
 import time
 import psutil
 
-from fastapi import APIRouter, Request, Depends, WebSocket, WebSocketDisconnect, status
+from fastapi import APIRouter, FastAPI, Request, Depends, WebSocket, WebSocketDisconnect, status
 from fastapi.responses import StreamingResponse
 from fastapi.encoders import jsonable_encoder
 from fastapi.routing import Mount
@@ -64,7 +64,7 @@ def get_version(request: Request) -> dict:
     # compute subapp
     controller_host = None
     for route in request.app.routes:
-        if isinstance(route, Mount) and route.name == "compute":
+        if isinstance(route, Mount) and route.name == "compute" and isinstance(route.app, FastAPI):
             controller_host = route.app.state.controller_host
 
     local_server = Config.instance().settings.Server.local
@@ -129,7 +129,7 @@ async def shutdown() -> None:
             try:
                 future.result()
             except Exception as e:
-                log.error(f"Could not close project: {e}", exc_info=1)
+                log.error(f"Could not close project: {e}", exc_info=True)
                 continue
 
     # then shutdown the server itself
@@ -191,8 +191,8 @@ async def statistics() -> dict:
     # Node statistics - distinguish open vs closed project nodes
     open_project_nodes = []
     closed_project_nodes = []
-    node_by_type = {}
-    node_by_status = {}
+    node_by_type: Dict[str, int] = {}
+    node_by_status: Dict[str, int] = {}
 
     for project in projects:
         nodes = project.nodes.values()
@@ -264,9 +264,8 @@ async def controller_http_notifications(request: Request) -> StreamingResponse:
 
     from gns3server.api.server import app
 
-    log.info(
-        f"New client {request.client.host}:{request.client.port} has connected to controller HTTP notification stream"
-    )
+    client = f"{request.client.host}:{request.client.port}" if request.client else "unknown"
+    log.info(f"New client {client} has connected to controller HTTP notification stream")
 
     async def event_stream():
         try:
@@ -275,10 +274,7 @@ async def controller_http_notifications(request: Request) -> StreamingResponse:
                     msg = await queue.get_json(5)
                     yield f"{msg}\n".encode("utf-8")
         finally:
-            log.info(
-                f"Client {request.client.host}:{request.client.port} has disconnected from controller HTTP "
-                f"notification stream"
-            )
+            log.info(f"Client {client} has disconnected from controller HTTP notification stream")
 
     return StreamingResponse(event_stream(), media_type="application/json")
 
@@ -294,14 +290,15 @@ async def controller_ws_notifications(
     if current_user is None:
         return
 
-    log.info(f"New client {websocket.client.host}:{websocket.client.port} has connected to controller WebSocket")
+    client = f"{websocket.client.host}:{websocket.client.port}" if websocket.client else "unknown"
+    log.info(f"New client {client} has connected to controller WebSocket")
     try:
         with Controller.instance().notification.controller_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 controller WebSocket")
+        log.info(f"Client {client} has disconnected from controller WebSocket")
     except WebSocketException as e:
         log.warning(f"Error while sending to controller event to WebSocket client: {e}")
 
diff --git a/gns3server/api/routes/controller/dependencies/database.py b/gns3server/api/routes/controller/dependencies/database.py
index 2e859106b..86375507d 100644
--- a/gns3server/api/routes/controller/dependencies/database.py
+++ b/gns3server/api/routes/controller/dependencies/database.py
@@ -14,7 +14,7 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-from typing import Callable, Type
+from typing import AsyncGenerator, Callable, Type
 from fastapi import Depends
 from starlette.requests import HTTPConnection
 from sqlalchemy.ext.asyncio import AsyncSession
@@ -22,7 +22,7 @@ from sqlalchemy.ext.asyncio import AsyncSession
 from gns3server.db.repositories.base import BaseRepository
 
 
-async def get_db_session(request: HTTPConnection) -> AsyncSession:
+async def get_db_session(request: HTTPConnection) -> AsyncGenerator[AsyncSession, None]:
 
     async with AsyncSession(request.app.state._db_engine, expire_on_commit=False) as session:
         try:
@@ -32,7 +32,7 @@ async def get_db_session(request: HTTPConnection) -> AsyncSession:
 
 
 def get_repository(repo: Type[BaseRepository]) -> Callable:
-    def get_repo(db_session: AsyncSession = Depends(get_db_session)) -> Type[BaseRepository]:
+    def get_repo(db_session: AsyncSession = Depends(get_db_session)) -> BaseRepository:
         return repo(db_session)
 
     return get_repo
diff --git a/gns3server/api/routes/controller/groups.py b/gns3server/api/routes/controller/groups.py
index 606835419..1b5de02d2 100644
--- a/gns3server/api/routes/controller/groups.py
+++ b/gns3server/api/routes/controller/groups.py
@@ -21,7 +21,7 @@ API routes for user groups.
 
 from fastapi import APIRouter, Depends, status
 from uuid import UUID
-from typing import List
+from typing import List, Optional
 
 from gns3server import schemas
 from gns3server.controller.controller_error import (
@@ -31,6 +31,7 @@ from gns3server.controller.controller_error import (
     ControllerForbiddenError,
 )
 
+import gns3server.db.models as models
 from gns3server.db.repositories.users import UsersRepository
 from gns3server.db.repositories.rbac import RbacRepository
 
@@ -47,7 +48,7 @@ router = APIRouter()
 @router.get("", response_model=List[schemas.UserGroup], dependencies=[Depends(has_privilege("Group.Audit"))])
 async def get_user_groups(
     users_repo: UsersRepository = Depends(get_repository(UsersRepository)),
-) -> List[schemas.UserGroup]:
+) -> List[models.UserGroup]:
     """
     Get all user groups.
 
@@ -65,7 +66,7 @@ async def get_user_groups(
 )
 async def create_user_group(
     user_group_create: schemas.UserGroupCreate, users_repo: UsersRepository = Depends(get_repository(UsersRepository))
-) -> schemas.UserGroup:
+) -> models.UserGroup:
     """
     Create a new user group.
 
@@ -82,7 +83,7 @@ async def create_user_group(
 async def get_user_group(
     user_group_id: UUID,
     users_repo: UsersRepository = Depends(get_repository(UsersRepository)),
-) -> schemas.UserGroup:
+) -> models.UserGroup:
     """
     Get a user group.
 
@@ -100,7 +101,7 @@ async def update_user_group(
     user_group_id: UUID,
     user_group_update: schemas.UserGroupUpdate,
     users_repo: UsersRepository = Depends(get_repository(UsersRepository)),
-) -> schemas.UserGroup:
+) -> Optional[models.UserGroup]:
     """
     Update a user group.
 
@@ -148,7 +149,7 @@ async def delete_user_group(
 )
 async def get_user_group_members(
     user_group_id: UUID, users_repo: UsersRepository = Depends(get_repository(UsersRepository))
-) -> List[schemas.User]:
+) -> List[models.User]:
     """
     Get all user group members.
 
diff --git a/gns3server/schemas/controller/users.py b/gns3server/schemas/controller/users.py
index 4fed51d49..8d8b90c13 100644
--- a/gns3server/schemas/controller/users.py
+++ b/gns3server/schemas/controller/users.py
@@ -80,7 +80,7 @@ class UserGroupCreate(UserGroupBase):
     Properties to create a user group.
     """
 
-    name: Optional[str] = Field(..., min_length=3, pattern="[a-zA-Z0-9_-]+$")
+    name: str = Field(..., min_length=3, pattern="[a-zA-Z0-9_-]+$")
 
 
 class UserGroupUpdate(UserGroupBase):
diff --git a/pyproject.toml b/pyproject.toml
index caf4db998..db7ea0e4c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -294,11 +294,6 @@ enable_error_code = ["ignore-without-code", "redundant-expr", "truthy-bool"]
 # Baseline: modules with existing type errors (error count at baseline time).
 # Remove modules from this list one small PR at a time. Never add new ones.
 module = [
-  "gns3server.api.routes.controller.computes",  # 6
-  "gns3server.api.routes.controller.controller",  # 10
-  "gns3server.api.routes.controller.dependencies.authentication",  # 11
-  "gns3server.api.routes.controller.dependencies.database",  # 2
-  "gns3server.api.routes.controller.groups",  # 6
   "gns3server.api.routes.controller.images",  # 9
   "gns3server.api.routes.controller.llm_model_configs",  # 32
   "gns3server.api.routes.controller.pools",  # 8