Fatal error: Uncaught Error: Class 'WP_Post_Type' not found in /home/omanfirs/public_html/wp-includes/post.php:21 Stack trace: #0 /home/omanfirs/public_html/wp-settings.php(500): create_initial_post_types() #1 /home/omanfirs/public_html/wp-config.php(85): require_once('/home/omanfirs/...') #2 /home/omanfirs/public_html/wp-load.php(50): require_once('/home/omanfirs/...') #3 /home/omanfirs/public_html/wp-blog-header.php(13): require_once('/home/omanfirs/...') #4 /home/omanfirs/public_html/index.php(17): require('/home/omanfirs/...') #5 {main} thrown in /home/omanfirs/public_html/wp-includes/post.php on line 21