I am trying to develop a fb app. It shows me a error message when I try to log in with the app.
API Error Code: 191
API Error Description: The specified URL is not owned by the application
Error Message: Invalid redirect_uri: Given URL is not allowed by the Application configuration.
app domain:www.abc.def.com
site url :http://www.abc.def.com/
Canvas URL:http://www.abc.def/fbapp/
check your redirect_url
The redirect_url must contain the Site URL or Canvas URL as defined in your App Settings. If one has a trailing slash the other must too.
You will find that this is the most common solution to this problem.
Facebook API error code 191
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Facebook API error 191