Fatal error: Uncaught Error: Call to undefined function Illuminate\Filesystem\join_paths() in /www/wwwroot/qaz.hnrxsr.cn/backend/vendor/laravel/framework/src/Illuminate/Foundation/Application.php:691 Stack trace: #0 /www/wwwroot/qaz.hnrxsr.cn/backend/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(479): Illuminate\Foundation\Application->joinPaths() #1 /www/wwwroot/qaz.hnrxsr.cn/backend/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(453): Illuminate\Foundation\Application->basePath() #2 /www/wwwroot/qaz.hnrxsr.cn/backend/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(424): Illuminate\Foundation\Application->path() #3 /www/wwwroot/qaz.hnrxsr.cn/backend/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(412): Illuminate\Foundation\Application->bindPathsInContainer() #4 /www/wwwroot/qaz.hnrxsr.cn/backend/vendor/laravel/framework/src/Illuminate/Foundation/Application.php(226): Illuminate\Foundation\Application->setBasePath() #5 /www/wwwroot/qaz.hnrxsr.cn/backend/bootstrap/app.php(12): Illuminate\Foundation\Application->__construct() #6 /www/wwwroot/qaz.hnrxsr.cn/backend/public/index.php(23): require_once('...') #7 {main} thrown in /www/wwwroot/qaz.hnrxsr.cn/backend/vendor/laravel/framework/src/Illuminate/Foundation/Application.php on line 691