fix root method

main.py

@@ -104,7 +104,7 @@ async def init_system_user():
         supabase.table("users").insert(system_user_data).execute()
 
 
-@root_router.post("/", status_code=status.HTTP_200_OK)
+@root_router.get("/", status_code=status.HTTP_200_OK)
 async def root(request: SignupRequest):
     message = f'{SERVER_NAME} v{VERSION}'
     return {"message": message}