Update app.py

app.py

@@ -61,7 +61,7 @@ FRONT_LOG_FILE = 'front_log.json'
 def index():
     user_ip = request.remote_addr
     logger.info(f'USER {user_ip} - ID {id} - started the app')
-    return "Ready!"
+    return app.send_static_file('demo/index.html')
 
 @app.route("/recommend", methods=['GET'])
 @cross_origin()