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Http 503 error  RSS feed

 
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I got the below error message when I upload a webhook to facebook:



The URL couldn't be validated. Callback verification failed with the following errors:
HTTP Status Code = 503;
HTTP Message = Service Unavailable



From what I have read, it means the service is unavailable.

I'd like to know if the service is referring to facebook or the host for my case is Heroku.

Hope someone can clear my doubt.

Tks.
 
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We have absolutely no idea what you're trying to achieve or what you're doing to get this result. Remember that we can't see what's happening on your screen. Please give us more context.
 
It is sorta covered in the JavaRanch Style Guide.
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