Call back verification failed on Facebook about messenger-bot-tutorial HOT 31 CLOSED

Faced the same issue but I noticed that you should set the VERIFY_TOKEN using heroku config:add VERIFY_TOKEN=your_verification_token_here in your terminal before verifying your webhook on the developer facebook page.

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Had the same problem, even though there was a Procfile it was giving me npm start errors. Adding:

"start": "node index.js"

To the package.json file fixed it for me 😄

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I fixed this by adding the node_modules/ in the .gitignore

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I am using ngrok to webhook facebook with other application but i am facing this error when i try adding to the URL " The URL couldn't be validated. Callback verification failed with the following errors: HTTP Status Code = 502; HTTP Message = Bad Gateway".

Please help me in fixing this.

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I was hitting with error 403. The issue was with Config Vars declared in Heroku APP. I had a typo in the name used. The variable name mentioned was 'VERIFICATION_TOKEN' where as in my callback code I was referring it as 'VERIFY_TOKEN'. After fixing this the issue was resolved

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Is the server available online? Is the callback URL correct?

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Hi Jerry,
I am facing similar issue, Call back verification failed. but message is bad gateway

The URL couldn't be validated. Callback verification failed with the following errors: HTTP Status Code = 502; HTTP Message = Bad Gateway

The heroku deployment URL is accessible. Please share if you have any suggestions.

Thank you.

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Please ignore the previous comment. I named Procfile as procfile

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I am facing this issue too.It shows
The URL couldn't be validated. Callback verification failed with the following errors: HTTP Status Code = 503; HTTP Message = Service Unavailable
And the heroku link seems to be broken with this message-

An error occurred in the application and your page could not be served. Please try again in a few moments.
If you are the application owner, check your logs for details.

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The heroku log shows-the app crashed

2016-07-28T11:41:39.150069+00:00 app[web.1]: at Function.Module._load (module.js:314:12)

2016-07-28T11:41:39.150070+00:00 app[web.1]: at startup (node.js:148:18)

2016-07-28T11:41:39.225296+00:00 heroku[web.1]: Process exited with status 1

2016-07-28T13:24:05.344533+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/?hub.mode=subscribe&hub.challenge=432092788&hub.verify_token=fb_bot" host=fb-121071064.herokuapp.com request_id=77443caa-168e-4428-9f43-9611d8230b9e fwd="66.220.146.21" dyno= connect= service= status=503 bytes=

2016-07-28T13:36:37.043656+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=fb-121071064.herokuapp.com request_id=03ed313b-0930-4e12-8303-1af63446a429 fwd="103.204.168.142" dyno= connect= service= status=503 bytes=

2016-07-28T13:36:37.942331+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=fb-121071064.herokuapp.com request_id=ca3b7c09-e44c-4fbb-97e1-156393b9d483 fwd="103.204.168.142" dyno= connect= service= status=503 bytes=

2016-07-28T13:40:46.783907+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=fb-121071064.herokuapp.com request_id=928318db-97b2-44c3-ae68-0a5cb20c692f fwd="103.204.168.142" dyno= connect= service= status=503 bytes=

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Having the same problem.

It won't validate, and the heroku logs show it crashed!

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I tried "heroku open" in the terminal, and my app could not be opened in the browser - I received an Application Error. I think the problem lies in that the Webhook endpoint isn't working correctly.

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getting same error for .net core mvc while adding the cal back url in webhooks
The URL couldn't be validated. Callback verification failed with the following errors: curl_errno = 56; curl_error = Received HTTP code 502 from proxy after CONNECT; HTTP Status Code = 502; HTTP Message = Private address

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getting same error for .net core mvc while adding the cal back url in webhooks
The URL couldn't be validated. Callback verification failed with the following errors: curl_errno = 56; curl_error = Received HTTP code 502 from proxy after CONNECT; HTTP Status Code = 502; HTTP Message = Private address

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I solved this issue by setting my Wit Token on the command line.
heroku config:set WIT_TOKEN='your_token_here'.
You can find your Wit token at Settings > Server Access Token.
Hope this helps.

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My solution is to restart the server or close all wed before paste URL callback

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restarted server but couldn't come up with a solution. Still the app is showing crashed and facebook is showing URL cannot be validated..

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stll facing the problem? in the VERIFY_TOKEN write a name your choice eg mytoken then on heroku go to settings then select reveal config var add Verify_TOKEN and value mytoken

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i tried heroku open command and my web page opens perfectly, i also add verify_token on heroku but when i setup webhook it shows following error:"The url could not be validated.Callback verification failed with following errors:HTTP status code = 500,HTTP Message= Internal Server error"..please tell me what to do to fix this error.

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Internal Server Error means VERIFY_TOKEN and other User Parameters offered by Facebook are not properly configured

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The URL couldn't be validated. Callback verification failed with the following errors: HTTP Status Code = 500; HTTP Message = Internal Server Error

I m having this issue
i have a wordpress website .

Plz help

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The URL couldn't be validated. Callback verification failed with the following errors: HTTP Status Code = 402; HTTP Message = Payment Required

i am having this issue

Please help

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Having same issue T T

Callback verification failed with the following errors: HTTP Status Code = 502; HTTP Message = Bad Gateway

I already set the VERIFY_TOKEN, and it still not work.

Please

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I am having the same issue:

The URL couldn't be validated. Callback verification failed with the following errors: HTTP Status Code = 502; HTTP Message = Bad Gateway

Even tried to add /webhook/ at the end but it doesn't work.

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I am having the same issue:
The URL couldn't be validated. Callback verification failed with the following errors: HTTP Status Code = 502; HTTP Message = Bad Gateway
:(

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Hi Jerry,
I am facing similar issue, Call back verification failed. but message is bad gateway

The URL couldn't be validated. Callback verification failed with the following errors: HTTP Status Code = 502; HTTP Message = Bad Gateway

The heroku deployment URL is accessible. Please share if you have any suggestions.

I am having this problem, can anyone help me'

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The URL couldn't be validated. Callback verification failed with the following errors: HTTP Status Code = 502; HTTP Message = Bad Gateway

Even tried to add /webhook/ at the end but it doesn't work.

Any suggestion to solve this error.

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If you have all token set up in heroku and verify token in fb messanger app and again facing same issue then do this.

From requirement.txt file
Delete the line : setuptool and update the file.
Your problem should be solved.

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Tuve el mismo problema era porque no instale las dependecias comando npm i

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The URL couldn't be validated. Callback verification failed with the following errors: curl_errno = 28; curl_error = Operation timed out after 6000 milliseconds with 0 bytes received; HTTP Status Code = 200; HTTP Message = Connection established

work fine in glitch
Any suggestion to solve this error.
Thank you in advance

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