问题
copy pasted the exact code from https://developers.facebook.com/docs/opengraph/getting-started/ , changed the appid. Yesterday it used to work..now..not so much.any idea?
回答1:
Check the settings for your Open Graph action.
Go to the Open Graph Dashboard for your app on Facebook Developers.
Click on the Read action.
Click the Advanced link. Make sure that Allow Multiple is selected for the setting called Unique action.
来源：https://stackoverflow.com/questions/20458739/error-3501-user-is-already-associated-to-the-object-type-article-on-a-uniq