Undefined variable notice

  • When debug mode is turned on, there is an error on “Subscribers” page:
    Notice: Undefined variable: message in /www/wordpress_project/wp-content/plugins/mail-subscribe-list/index.php on line 62

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  • I confirm that too. And more errors if you try to remove email for ex.

    Notice: Undefined index: rem in /wp-content/plugins/mail-subscribe-list/index.php on line 17

Notice: wpdb::escape is deprecated since version 3.6.0! Use wpdb::prepare() or esc_sql() instead. in /wp-includes/functions.php on line 3707

Notice: Undefined index: sml_import in /wp-content/plugins/mail-subscribe-list/index.php on line 28
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