update

app/main.py

@@ -18,6 +18,11 @@ def get_db():
     finally:
         db.close()
 
+@app.get("/")
+async def root():
+    return {"message": "Hello World"}
+
+    
 @app.get("/add", response_model=schemas.User)
 def add_user(
     nickname: Optional[str] = None,