Fatal error: Out of memory (allocated 12582912) (tried to allocate 4096 bytes) in C:\xampp\htdocs\WP\wp-includes\post.php on line 5721

Fatal error: Uncaught Error: Call to undefined function wp_kses_normalize_entities() in C:\xampp\htdocs\WP\wp-includes\formatting.php:4361 Stack trace: #0 C:\xampp\htdocs\WP\wp-includes\class-wp-fatal-error-handler.php(190): esc_url('https://wordpre...') #1 C:\xampp\htdocs\WP\wp-includes\class-wp-fatal-error-handler.php(147): WP_Fatal_Error_Handler->display_default_error_template(Array, false) #2 C:\xampp\htdocs\WP\wp-includes\class-wp-fatal-error-handler.php(52): WP_Fatal_Error_Handler->display_error_template(Array, false) #3 [internal function]: WP_Fatal_Error_Handler->handle() #4 {main} thrown in C:\xampp\htdocs\WP\wp-includes\formatting.php on line 4361