Fatal error: Uncaught Error: Call to undefined function nocache_headers() in /var/www/html/wp-admin/admin.php:36 Stack trace: #0 /var/www/html/wp-admin/user-edit.php(10): require_once() #1 /var/www/html/wp-admin/profile.php(18): require_once('/var/www/html/w...') #2 /var/www/html/wp-includes/version.php(1): include_once('/var/www/html/w...') #3 /var/www/html/wp-settings.php(24): require('/var/www/html/w...') #4 /var/www/html/wp-config.php(57): require_once('/var/www/html/w...') #5 /var/www/html/wp-load.php(53): require_once('/var/www/html/w...') #6 /var/www/html/wp-blog-header.php(13): require_once('/var/www/html/w...') #7 /var/www/html/index.php(1): require('/var/www/html/w...') #8 {main} thrown in /var/www/html/wp-admin/admin.php on line 36