create fix

server/backend/database/db.py

@@ -46,6 +46,7 @@ async def create_user(user_info):
             session.add(new_user)
             await session.commit()
             await session.refresh(new_user)
+        else: return None
         return user
 
 async def update_user(user_info):

server/backend/endpoints/endpoints.py

@@ -45,7 +45,12 @@ async def update_user(data: pydantic.UserUpdate, user=Depends(get_current_user))
 
 @api.post("/create", response_model=pydantic.UserAccess)
 async def create_user(user_info: pydantic.UserCreate,user=Depends(check_roles)):
-    await db.create_user(user_info)
+    user = await db.create_user(user_info)
+    if user == None:
+        raise HTTPException(
+                    status_code=status.HTTP_409_CONFLICT,
+                    detail="Code already exists for another user"
+                )
     return user_info
 
 @api.get("/list")