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Fatal error: Uncaught Error: Call to undefined function mysql_real_escape_string() in /wp-content/plugins/wp-mailing-group/mailing-group-module.php:246
Stack trace:
#0 /wp-includes/plugin.php(524): wpmg_add_mailing_group_plugin(”)
#1 /wp-admin/plugins.php(166): do_action(‘activate_wp-mai…’)
#2 {main} thrown in /wp-content/plugins/wp-mailing-group/mailing-group-module.php on line 246