invalid scopes pages_manage_posts, pages_manage_engagement code example
Example 1: facebook invalid scopes manage_pages. this message is only shown to developers
This error is because of facebook has updated permissions that you are looking for to new ones refer latest permissions this documentation shows latest permissions and update yours https://developers.facebook.com/docs/facebook-login/permissions
Example 2: facebook invalid scopes manage_pages. this message is only shown to developers
just remove manage_page from scope attribute
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