Vagrant mac上的随机上升错误

流浪版本：1.9.1

Virtualbox版本：5.1.14

已经尝试过了，但没有成功：

Vagrant was unable to mount VirtualBox shared folders. This is usually
because the filesystem "vboxsf" is not available. This filesystem is
made available via the VirtualBox Guest Additions and kernel module.
Please verify that these guest additions are properly installed in the
guest. This is not a bug in Vagrant and is usually caused by a faulty
Vagrant box. For context, the command attempted was:

id -u nginx

The error output from the command was:

id: nginx: no such user

---

安装也尝试过，但不起作用错误的第二部分是关于缺少nginx用户，您是否将创建该用户作为设置的一部分？它是否已经可用？您还在您的虚拟机箱中使用与您的虚拟机箱版本不同的来宾添加。请尝试使用与您正在使用的虚拟机版本相同的来宾添加版本的机匣文件。

sudo ln -s /opt/VBoxGuestAdditions-4.3.10/lib/VBoxGuestAdditions /usr/lib/VBoxGuestAdditions

ln: /usr/lib/VBoxGuestAdditions: File exists