update

app/main.py

@@ -30,11 +30,11 @@ def get_db():
         db.close()
 
 @app.get("/")
-async def root():
+def root():
     return {"message": "Hello World"}
 
 @app.get("/hello")
-async def hello():
+def hello():
     return {"message": "Hello World"}
 
 @app.get("/add", response_model=schemas.User)