一、我先升级了thinkphp6.0到最新版本：
composer update topthink/framework
二、结果提示我composer版本过低，需要升级到2，于是我又升级了composer
composer self-update
三、我又升级了workerman:
composer require topthink/think-worker
四、执行php think worker:gateway -d报错
fclose(): Argument #1 ($stream) must be of type resource, null given
五、在workerman论坛找到了答案，解决方案：https://www.workerman.net/q/6652
完美解决