Add Page Tab dialog not working
I was always using the direct Add to Page Tab URL like this:

http://www.facebook.com/dialog/pagetab?app_id=238557109577754&redirect_uri=http://www.facebook.com

And today that URL gives me "**Sorry, something went wrong.**". Did something changed on Facebook side? Or is it a temporary bug?

Note that I have tried other redirect_uri params, such as the URL of the location where the app is hosted. It does always result in the same error.
Add Page Tab dialog not working
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I was always using the direct Add to Page Tab URL like this:

http://www.facebook.com/dialog/pagetab?app_id=238557109577754&redirect_uri=http://www.facebook.com

And today that URL gives me "**Sorry, something went wrong.**". Did something changed on Facebook side? Or is it a temporary bug?

Note that I have tried other redirect_uri params, such as the URL of the location where the app is hosted. It does always result in the same error.