Update app.py

app.py

@@ -145,10 +145,13 @@ async def query(question_request: QuestionRequest):
 def run_streamlit():
     subprocess.Popen(["streamlit", "run", "frontend.py", "--server.port", "8501"])
 
+@app.on_event("startup")
+async def startup_event():
+    run_streamlit()
+
 @app.get("/")
-async def root(background_tasks: BackgroundTasks):
-    background_tasks.add_task(run_streamlit)
-    return {"message": "Streamlit app is running at http://localhost:8501"}
+async def root():
+    return RedirectResponse(url="http://localhost:8501")
 
 
 #if __name__ == '__main__':