key “active” is unchecked

I got this error trace all over my admin dashboard pages “Warning: Undefined array key “active” in /home/icelorid/staging.icel.or.id/wp-content/plugins/members/admin/class-notifications.php on line 414″.

I guess there’s an unchecked variable. It should be checked with isset() method or something like that. Please fix this, this site is for my client. I know I can just hide it when later I set the WP_DEBUG to false, but I’m worry it’ll cause some issues in the future.

Thanks.