TP6首页加载报错 Call to a member function run() on null

最近新接入一个二开的项目，tp6的项目内置的composer.json文件里引入的topthink框架包文件却是"topthink/framework": "5.0.*",导致了以下错误：

错误：

Fatal error: Uncaught Error: Call to a member function run() on null in /www/wwwroot/www.test.com/public/index.php:29 Stack trace: #0 {main} thrown in /www/wwwroot/www.test.com/public/index.php on line 29

解决：

修改composer.json文件如下：

{"name": "topthink/think","description": "the new thinkphp framework","type": "project","keywords": ["framework","thinkphp","ORM"],"homepage": "http://thinkphp.cn/","license": "Apache-2.0","authors": [{"name": "liu21st","email": "liu21st@gmail.com"}],"require": {"php": ">=5.4.0","topthink/framework": "5.0.*","alibabacloud/client": "^1.5"},"autoload": {"psr-4": {"app\\": "application"}},"extra": {"think-path": "thinkphp"},"config": {"preferred-install": "dist"}
}

执行composer update 更新 vendor文件，问题解决。