Callback Verification Failed

[atindersaini]

Hey Jerry,

I am getting the below error even though my heroku app is accessible. Please help!

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

Thanks.

[AustinTing]

My partner and I used this tutorial, and he succeeded but I failed.

We are trying figuring out what is going on....

[marquavious]

@AustinTing any clue as to what is going on?

[AustinTing]

@marquavious we think that there is weird in heroku. We followed the tutorial and created three heroku projects but two projects slept(ZZZ icon in heroku console). Those which slept projects are not accessible. If you can link heroku project by your browser directly, you will have high opportunity success in Facebook. But sometime fails even if use the same heroku link(Facebook accepted before)

[joseignazuleta]

Hi guys, I had the same problem following the tutorial and the problem was that when you create the Procfile with the sentence "web : node index.js" Heroku try to execute ": node index.js". That causes the app to crash.
Simply remove the : from the file and it will work.

[5aharsh]

I was facing the same problem. Later I found that some how my Procfile was having .txt as extension. I removed it, added, commited, pushed and it worked like a charm. Content inside Procfile is web: node index.js

[luizcartolano2]

anyone knows how to fix this "Bad Gateway" error?