Fatal error: Uncaught Error: Class 'Smarty_Template_Source' not found in C:\Project\WWW\SanGuo\ThinkPHP\Library\Vendor\Smarty\sysplugins\smarty_config_source.php:22 Stack trace: #0 {main} thrown in C:\Project\WWW\SanGuo\ThinkPHP\Library\Vendor\Smarty\sysplugins\smarty_config_source.php on line 22