Homestead在启动盒子时出现这个错误，如何解决？

Timed out while waiting for the machine to boot. This means that

Vagrant was unable to communicate with the guest machine within

the configured ("config.vm.boot_timeout" value) time period.

If you look above, you should be able to see the error(s) that

Vagrant had when attempting to connect to the machine. These errors

are usually good hints as to what may be wrong.

If you're using a custom box, make sure that networking is properly

working and you're able to connect to the machine. It is a common

problem that networking isn't setup properly in these boxes.

Verify that authentication configurations are also setup properly,

as well.