Comment 8 for bug 1493765

So the problem is:

I guess masa-deployer will detect the timezone, and set the locale to corresponding locale. For example, I'm in CST timezone, in MAAS VM, the locales are set to 'zh_CN.UTF-8', HOWEVER, the 'language-pack-sh-hans' is not installed, which results in this error.

I bet the workaround for now could be either

1. set the locale to 'en_US.UTF-8', or 'C'

or

2. install the related package to the locale