My Advanced Rest Client was working perfectly and sending message. Maybe it send 10 messages, but after that it is showing this message. Please tell me whats wrong with it.
Here is the picture of the error
Here is my message body
{
"to":"/topics/NEWS",
"data":
{
"title":"Eid Notification",
"img_url":"http://www.pakworkers.com/wp-content/uploads/2017/06/Eid-ul-Fitr-Holidays-Announced-by-Interior-Ministry-of-Pakistan-26-28-June-2017.jpg"
}
}