执行php artisan moon:install后报错

[junyiiu]

执行了php artisan moon:install这个命令后提示一下错误，请问该怎么解决呢
[root@iZj6cddw7sm2rk7hgi4yugZ shopsite]# php artisan moon:install
PHP Warning: require(/myshopsite/shopsite/vendor/autoload.php): failed to open stream: No such file or directory in /myshopsite/shopsite/artisan on line 18

Warning: require(/myshopsite/shopsite/vendor/autoload.php): failed to open stream: No such file or directory in /myshopsite/shopsite/artisan on line 18
PHP Fatal error: require(): Failed opening required '/myshopsite/shopsite/vendor/autoload.php' (include_path='.:/www/server/php/72/lib/php') in /myshopsite/shopsite/artisan on line 18

Fatal error: require(): Failed opening required '/myshopsite/shopsite/vendor/autoload.php' (include_path='.:/www/server/php/72/lib/php') in /myshopsite/shopsite/artisan on line 18

[seth-shi]

请先运行 composer install, 具体查看安装过程