Update app.py

app.py

@@ -344,9 +344,9 @@ def image_to_video():
                 break
 
             # Send a ping if PING_INTERVAL has passed
-            # if time.time() - last_ping > PING_INTERVAL:
-            #     ws.send('ping')
-            #     last_ping = time.time()
+            if time.time() - last_ping > PING_INTERVAL:
+                ws.send('ping')
+                last_ping = time.time()
 
         # Fetch the history of the workflow
         history = get_history(prompt_id, token).get(prompt_id, {})