$ invoker start
/Users/wojtek/.rvm/gems/ruby-2.3.5/gems/dotenv-2.4.0/lib/dotenv/environment.rb:7:in `initialize': wrong number of arguments (given 1, expected 2) (ArgumentError)
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/invoker-1.5.6/lib/invoker/process_manager.rb:101:in `new'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/invoker-1.5.6/lib/invoker/process_manager.rb:101:in `load_env'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/invoker-1.5.6/lib/invoker/process_manager.rb:189:in `run_command'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/invoker-1.5.6/lib/invoker/process_manager.rb:19:in `start_process'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/invoker-1.5.6/lib/invoker/commander.rb:41:in `block in start_manager'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/invoker-1.5.6/lib/invoker/commander.rb:40:in `each'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/invoker-1.5.6/lib/invoker/commander.rb:40:in `start_manager'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/invoker-1.5.6/lib/invoker/cli.rb:62:in `start'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/thor-0.20.0/lib/thor/command.rb:27:in `run'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/thor-0.20.0/lib/thor/invocation.rb:126:in `invoke_command'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/thor-0.20.0/lib/thor.rb:387:in `dispatch'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/thor-0.20.0/lib/thor/base.rb:466:in `start'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/invoker-1.5.6/lib/invoker/cli.rb:12:in `start'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/gems/invoker-1.5.6/bin/invoker:7:in `<top (required)>'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/bin/invoker:23:in `load'
from /Users/wojtek/.rvm/gems/ruby-2.3.5/bin/invoker:23:in `<main>'
Related in PR in dotenv: https://github.com/bkeepers/dotenv/pull/345