$ vagrant up --provider=aws
/home/REDACTED/.vagrant.d/gems/2.4.9/gems/vagrant-aws-0.7.2/lib/vagrant-aws/action/connect_aws.rb:41:in `call': undefined method `except' for #<Hash:0x0000000003311f48> (NoMethodError)
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/warden.rb:57:in `call'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/builtin/before_trigger.rb:23:in `call'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/warden.rb:57:in `call'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/builtin/after_trigger.rb:26:in `call'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/warden.rb:57:in `call'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/builtin/config_validate.rb:25:in `call'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/warden.rb:57:in `call'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/builtin/before_trigger.rb:23:in `call'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/warden.rb:57:in `call'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/builder.rb:116:in `call'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/runner.rb:102:in `block in run'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/util/busy.rb:19:in `busy'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/action/runner.rb:102:in `run'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/machine.rb:238:in `action_raw'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/machine.rb:209:in `block in action'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/machine.rb:191:in `block in action'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/machine.rb:195:in `action'
from /home/REDACTED/.vagrant.d/gems/2.4.9/gems/vagrant-aws-0.7.2/lib/vagrant-aws/provider.rb:32:in `state'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/machine.rb:532:in `state'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/machine.rb:146:in `initialize'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/vagrantfile.rb:81:in `new'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/vagrantfile.rb:81:in `machine'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/environment.rb:715:in `machine'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/plugin/v2/command.rb:180:in `block in with_target_vms'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/plugin/v2/command.rb:204:in `block in with_target_vms'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/plugin/v2/command.rb:186:in `each'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/plugin/v2/command.rb:186:in `with_target_vms'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/plugins/commands/up/command.rb:87:in `execute'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/cli.rb:66:in `execute'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/lib/vagrant/environment.rb:290:in `cli'
from /opt/vagrant/embedded/gems/2.2.7/gems/vagrant-2.2.7/bin/vagrant:182:in `<main>'
After installing vagrant-aws per https://github.com/mitchellh/vagrant-aws/issues/567, the following error appears at runtime:
Environment:
What am I missing?