Update app.py

app.py

@@ -864,7 +864,7 @@ async def main():
     loop.add_signal_handler(signal.SIGTERM, stop.set_result, None)
 
     port = int(os.environ.get("PORT", "7860"))
-    async with websockets.serve(handler, "0.0.0.0", port):
+    async with websockets.serve(handler, "0.0.0.0", port,ping_timeout=120):
         await stop