WordPress settings only allow logged users to view content short code call problems, Help

The following code is inserted into the function.php to enable the login user to view the article content, insert [members_only] [/menmbers_only] where each article needs to be viewed by the user.

But I use foogallery in the article after the short code, Foogallery can not display normally, ask how to solve?
[Members_only]
[Foogallery id= "141"] article published here still shows [Foogallery id= "141"], did not call the short code.
[/menmbers_only]

add_shortcode( ‘members_only’, ‘members_only_shortcode’ );function members_only_shortcode( $atts, $content = null ){if ( is_user_logged_in() && !empty( $content ) && !is_feed() ){return $content;}return ‘注册并购买课程之后才能学习哦~';}

Reply content:

The following code is inserted into the function.php to enable the login user to view the article content, insert [members_only] [/menmbers_only] where each article needs to be viewed by the user.

But I use foogallery in the article after the short code, Foogallery can not display normally, ask how to solve?
[Members_only]
[Foogallery id= "141"] article published here still shows [Foogallery id= "141"], did not call the short code.
[/menmbers_only]

add_shortcode( ‘members_only’, ‘members_only_shortcode’ );function members_only_shortcode( $atts, $content = null ){if ( is_user_logged_in() && !empty( $content ) && !is_feed() ){return $content;}return ‘注册并购买课程之后才能学习哦~';}

Return Do_shortcode ($content);

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