Fatal error: Uncaught Error: Call to undefined function wp_is_json_request() in C:\xampp\htdocs\wp-includes\functions.php:2995
Stack trace:
#0 C:\xampp\htdocs\wp-includes\functions.php(4379): wp_die('<h1>Error estab...', 'Database Error')
#1 C:\xampp\htdocs\wp-includes\load.php(422): dead_db()
#2 C:\xampp\htdocs\wp-settings.php(111): wp_set_wpdb_vars()
#3 C:\xampp\htdocs\wp-config.php(93): require_once('C:\\xampp\\htdocs...')
#4 C:\xampp\htdocs\wp-load.php(37): require_once('C:\\xampp\\htdocs...')
#5 C:\xampp\htdocs\wp-blog-header.php(13): require_once('C:\\xampp\\htdocs...')
#6 C:\xampp\htdocs\index.php(135): require('C:\\xampp\\htdocs...')
#7 {main}
thrown in C:\xampp\htdocs\wp-includes\functions.php on line 2995