Fatal error: Uncaught Error: Call to undefined function _deprecated_file() in /var/sites/m/marksandbox3.reworkdigital.info/public_html/health/wp-admin/custom-background.php:12
Stack trace:
#0 {main}
thrown in /var/sites/m/marksandbox3.reworkdigital.info/public_html/health/wp-admin/custom-background.php on line 12