Warning: require(C:\xampp\htdocs\pro-motion.online/wp-includes/class-wp-theme-json-resolver.php): Failed to open stream: No such file or directory in C:\xampp\htdocs\pro-motion.online\wp-settings.php on line 192

Fatal error: Uncaught Error: Failed opening required 'C:\xampp\htdocs\pro-motion.online/wp-includes/class-wp-theme-json-resolver.php' (include_path='C:\xampp\php\PEAR') in C:\xampp\htdocs\pro-motion.online\wp-settings.php:192 Stack trace: #0 C:\xampp\htdocs\pro-motion.online\wp-config.php(113): require_once() #1 C:\xampp\htdocs\pro-motion.online\wp-load.php(50): require_once('C:\\xampp\\htdocs...') #2 C:\xampp\htdocs\pro-motion.online\wp-blog-header.php(13): require_once('C:\\xampp\\htdocs...') #3 C:\xampp\htdocs\pro-motion.online\index.php(17): require('C:\\xampp\\htdocs...') #4 {main} thrown in C:\xampp\htdocs\pro-motion.online\wp-settings.php on line 192

Fatal error: Uncaught Error: Call to a member function set() on null in C:\xampp\htdocs\pro-motion.online\wp-includes\l10n.php:856 Stack trace: #0 C:\xampp\htdocs\pro-motion.online\wp-includes\l10n.php(959): load_textdomain('default', 'C:\\xampp\\htdocs...', 'it_IT') #1 C:\xampp\htdocs\pro-motion.online\wp-includes\class-wp-fatal-error-handler.php(49): load_default_textdomain() #2 [internal function]: WP_Fatal_Error_Handler->handle() #3 {main} thrown in C:\xampp\htdocs\pro-motion.online\wp-includes\l10n.php on line 856