Homestead Vagrant up 报错

Homestead 用的好好的，突然报错了。

$ vagrant up
Bringing machine ‘default’ up with ‘virtualbox’ provider…

==> default: Box ‘base’ could not be found. Attempting to find and install…
default: Box Provider: virtualbox
default: Box Version: >= 0
==> default: Box file was not detected as metadata. Adding it directly…
==> default: Adding box ‘base’ (v0) for provider: virtualbox
default: Downloading: base
default: An error occurred while downloading the remote file.

The error message, if any, is reproduced below. Please fix this error and try again.
Couldn’t open file /C:/Users/hh/Homestead/base |