Fatal error: Uncaught Error: Class "User" not found in C:\Users\OMEN\Desktop\insert-data\wp-content\themes\delor\form.php:15 Stack trace: #0 C:\Users\OMEN\Desktop\insert-data\wp-content\themes\delor\functions.php(4): include() #1 C:\Users\OMEN\Desktop\insert-data\wp-settings.php(668): include('C:\\Users\\OMEN\\D...') #2 C:\Users\OMEN\Desktop\insert-data\wp-config.php(96): require_once('C:\\Users\\OMEN\\D...') #3 C:\Users\OMEN\Desktop\insert-data\wp-load.php(50): require_once('C:\\Users\\OMEN\\D...') #4 C:\Users\OMEN\Desktop\insert-data\wp-blog-header.php(13): require_once('C:\\Users\\OMEN\\D...') #5 C:\Users\OMEN\Desktop\insert-data\index.php(17): require('C:\\Users\\OMEN\\D...') #6 {main} thrown in C:\Users\OMEN\Desktop\insert-data\wp-content\themes\delor\form.php on line 15