Bolckmesh error

[moxinjian]

Hi everyone ,when i use the component bolckmesh i met this problem.I use the BF ver.0.0.04.

1. Solution exception:‘docker-machine’ ²»ÊÇÄÚ²¿»òÍⲿÃüÁҲ²»ÊÇ¿ÉÔËÐеijÌÐò
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   I hope to get your help ，any suggestion will be appreciate