Fatal error: Uncaught Error: Class 'think\Validate' not found in /www/wwwroot/g147/vendor/topthink/think-captcha/src/helper.php:14 Stack trace: #0 /www/wwwroot/g147/thinkphp/library/think/Loader.php(676): require() #1 /www/wwwroot/g147/thinkphp/library/think/Loader.php(361): think\__require_file('/www/wwwroot/g1...') #2 /www/wwwroot/g147/thinkphp/library/think/Loader.php(317): think\Loader::loadComposerAutoloadFiles() #3 /www/wwwroot/g147/thinkphp/base.php(59): think\Loader::register() #4 /www/wwwroot/g147/thinkphp/start.php(16): require('/www/wwwroot/g1...') #5 /www/wwwroot/g147/index.php(39): require('/www/wwwroot/g1...') #6 {main} thrown in /www/wwwroot/g147/vendor/topthink/think-captcha/src/helper.php on line 14