"message":"OAuthException: (#200) Insufficient permission to post to target on behalf of the viewer","trace":"[]","code":0
This message started to appear randomly after the recent Facebook maintenance actions.
My users are generating this error while trying to share into their groups.
Any thought on how to solve this?.
Check Your app's privacy settings is public.Otherwise make it to public.
To Change App's Privacy settings,Go to settings Click on Apps .Then Change 'App visibility and post audience' to public.
When the application request the permission, you need choose Public, not Only Me.