less-rails breaks if there is no less-specific config set

[Andrew Mason]

Just bumped to rails 4.2.3, and now getting errors like:

I think this is coming from the config_from_rails method, which currently expects a config.less to have appeared somewhere in the application.

I think it should updated from
scope.environment.context_class.less_config
to
scope.environment.context_class.less_config || {}

[Andrew Mason]

Actually, this looks it's caused from something else. If I add puts Rails.application.config.less in one of my initializers, I see:
{:paths => ["/path/1", "/path/2"], :compress => nil}

So it looks like the config_from_rails is not loading the config correctly for rails 4.2.3

[Andrew Mason]

bundle update less-rails solved it. disregard!