One of the dependencies, goslate, has been abandoned and deleted by its author. It needs to be replaced.

Google has updated its translation service recently with a ticket mechanism to prevent simple crawler program like goslate from accessing. Though a more sophisticated crawler may still work technically, however it would have crossed the fine line between using the service and breaking the service. goslate will not be updated to break google’s ticket mechanism. Free lunch is over. Thanks for using.

Source: https://pypi.org/project/goslate/