Fatal error: Uncaught Error: Class 'think\Validate' not found in D:\wwwroot\gdgxxny.com\vendor\topthink\think-captcha\src\helper.php:14 Stack trace: #0 D:\wwwroot\gdgxxny.com\thinkphp\library\think\Loader.php(676): require() #1 D:\wwwroot\gdgxxny.com\thinkphp\library\think\Loader.php(361): think\__require_file('D:\\wwwroot\\gdgx...') #2 D:\wwwroot\gdgxxny.com\thinkphp\library\think\Loader.php(317): think\Loader::loadComposerAutoloadFiles() #3 D:\wwwroot\gdgxxny.com\thinkphp\base.php(59): think\Loader::register() #4 D:\wwwroot\gdgxxny.com\thinkphp\start.php(16): require('D:\\wwwroot\\gdgx...') #5 D:\wwwroot\gdgxxny.com\index.php(39): require('D:\\wwwroot\\gdgx...') #6 {main} thrown in D:\wwwroot\gdgxxny.com\vendor\topthink\think-captcha\src\helper.php on line 14