Canvas authorization error 191
问题 I'm trying to implement a canvas page on facebook. The Canvas tutorial says that I should set the redirect_url to the canvas page: http://apps.facebook.com/<appName> However, when I do that, I get error 191. If I set it to the canvas url http://www.<mysite>.com/fbCanvas instead, then I lose the Facebook interface, since it opens in the "top" window. What's the correct way to implement this functionality? Is this a bug with Facebook? 回答1: I had the same problem, and I solved it this way: Open