Fatal error: Uncaught Error: Call to undefined function register_deactivation_hook() in /home/shineqat/public_html/wp-content/plugins/wp-retina-2x/classes/admin.php:3 Stack trace: #0 {main} thrown in /home/shineqat/public_html/wp-content/plugins/wp-retina-2x/classes/admin.php on line 3