Fatal error: Cannot use Joomla\String\String as String because 'String' is a special class name in C:\inetpub\wwwroot\libraries\vendor\joomla\registry\src\Format\Json.php on line 12

Warning: session_write_close(): Failed to write session data (user). Please verify that the current setting of session.save_path is correct () in C:\inetpub\wwwroot\libraries\joomla\session\session.php on line 830