Fatal error: Uncaught Error: Class 'think\Route' not found in C:\phpStudy\PHPTutorial\WWW\备份\临时\thinkphp5\vendor\topthink\think-captcha\src\helper.php:12 Stack trace: #0 {main} thrown in C:\phpStudy\PHPTutorial\WWW\备份\临时\thinkphp5\vendor\topthink\think-captcha\src\helper.php on line 12