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Editorial Team
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Asked: 2026-06-07T04:52:10+00:00

I am building a Facebook app using Django. So, for development, I connected the

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I am building a Facebook app using Django. So, for development, I connected the app to localhost. My app is loading on canvas and working fine but the Facebook debugger is unable to test it correctly when I give localhost address as input.

These are the requests I tried in debugger

http://localhost
https://localhost/
http://127.0.0.1/
localhost

etc

Almost for all possible combinations.. It showed me

Error Parsing URL:  Error parsing input URL, no data was scraped.

When I deployed the same code on heroku and tried.. It was working!

So,

  1. Can’t I debug the project on localhost? What’s the point in working on it then??
  2. If I can work, how should I fix it?
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1 Answer

  1. Editorial Team

    Can’t I debug the project on localhost? What’s the point in working on it then??

    You can debug your code etc. on localhost – but of course you can’t have Facebook’s debug tool reach a site on your localhost, because Facebook (and everyone else on the web) does have no idea what machine your localhost actually is. (Absolute bascis, dude!)

    If I can work, how should I fix it?

    You have to make your web server accessible from the “outside”, over the internet.

    Set up your test server so that it accepts requests from outside IPs, and get a DynDNS address (basically something that can be resolved by third parties like Facebook over the DNS).

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