Update app.py

app.py

@@ -241,7 +241,10 @@ async def fb_post_detail(username: Optional[str] = None, post_id: Optional[str]
         if not post_id:
             post_id = url.split("/")[-1]
         try:
-            post_details = requests.get(f"https://www.graph.facebook.com/v20.0/1066512588151225_{post_id}?fields=place,shares,targeting,updated_time,created_time,description,child_attachments,caption,event,message,message_tags,story,status_type,source,coordinates,backdated_time,story_tags,scheduled_publish_time,properties,attachments&access_token={api_access_key}").json()
+            post_details = requests.get(
+                f"https://graph.facebook.com/v20.0/1066512588151225_{post_id}?fields=place,shares,targeting,updated_time,created_time,description,child_attachments,caption,event,message,message_tags,story,status_type,source,coordinates,backdated_time,story_tags,scheduled_publish_time,properties,attachments&access_token={api_access_key}",
+                headers={"user-agent": "Googlebot",}
+            ).json()
             if post_details.get("updated_time"):
                 date = post_details.get("updated_time")
             else: