Warning: Use of undefined constant WP_CORE_SECURE - assumed 'WP_CORE_SECURE' (this will throw an Error in a future version of PHP) in /home/customer/www/public_html/wp-config.php on line 78

Fatal error: Uncaught Error: Call to undefined function wp_initialize_theme_core() in /home/customer/www/public_html/wp-settings.php:382
Stack trace:
#0 /home/customer/www/public_html/wp-config.php(94): require_once()
#1 /home/customer/www/public_html/wp-load.php(50): require_once('/home/customer/...')
#2 /home/customer/www/public_html/index.php(17): require('/home/customer/...')
#3 {main} thrown in /home/customer/www/public_html/wp-settings.php on line 382