The URL couldn't be validated error when trying to add callback URL

[ismailelfa]

Hello,

I'm trying to add messenger bot functionality to our game, we setup the server (node.js) and everything else in our custom hosting. But, Facebook is not accepting my Webhook callback URL. The same URL is responding fine when i am trying from browser or terminal. Any reasons why my callback URL is not getting validated?

 

Regards,

[b10b]

Is your webhook url returning the hub.challenge sent?

[Noel]

It looks like a duplicate of this post from the Instant Games developer community: https://www.facebook.com/groups/instantgamedevelopers/permalink/1163708780491946/

[ismailelfa]

8 hours ago, b10b said:

Is your webhook url returning the hub.challenge sent?

Yes, I am seeing the logs on server when I am hitting the url from browsers or terminal. But, when submitting the url to Facebook the logs are not there.

[ismailelfa]

8 hours ago, Noel said:

It looks like a duplicate of this post from the Instant Games developer community: https://www.facebook.com/groups/instantgamedevelopers/permalink/1163708780491946/

Yes, we posted this on both Instant Games developer group and here in hope to figure this out asap. I hope I didn't break any rule of the forum or the group.

[Noel]

@ismailelfa No, no worries. It just seemed very similar so I was encouraging you to check the post on the community as you already got good answers there.