many errors

I’m afraid the code needs some cleanup. I suggest that the developer run his/her development environment with debugging warnings enabled so these can be caught. I don’t know whether the plugin actually works; I don’t trust code with this many errors.

The error message that others have called out appears on every page and in the settings menu:
Notice: has_cap was called with an argument that is deprecated since version 2.0! Usage of user levels by plugins and themes is deprecated. Use roles and capabilities instead. in /Users/Shared/WebServer/malode/wp-includes/functions.php on line 3495

When I add the widget to a widget area, I get the following message:
Settings -> Facebook Members for all required options. "); ?>

When I go to the Facebook Members Settings page, I get the following errors:
Notice: Undefined index: as_facebook_mem_stream in /Users/Shared/WebServer/malode/wp-content/plugins/facebook-members/facebook-members.php on line 147 Notice: Undefined index: as_facebook_mem_header in /Users/Shared/WebServer/malode/wp-content/plugins/facebook-members/facebook-members.php on line 148 Notice: Undefined index: as_facebook_mem_faces in /Users/Shared/WebServer/malode/wp-content/plugins/facebook-members/facebook-members.php on line 149 Notice: Undefined index: as_facebook_mem_widget_stream in /Users/Shared/WebServer/malode/wp-content/plugins/facebook-members/facebook-members.php on line 150 Notice: Undefined index: as_facebook_mem_widget_faces in /Users/Shared/WebServer/malode/wp-content/plugins/facebook-members/facebook-members.php on line 151

https://ww.wp.xz.cn/plugins/facebook-members/