Failing knife softlayer server create --hostname test --domain example.com --flavor tiny

[mbhavya]

1st example in readme of this repo, to create a vm, is failing:

[user@system chef-repo]$ knife softlayer server create --hostname test --domain bluecloud.ibm.com --flavor tiny -VV
INFO: Using configuration from /home/user/code/chef-repo/.chef/knife.rb
Launching SoftLayer VM, this may take a few minutes.
/home/user/.chefdk/gem/ruby/2.1.0/gems/fog-softlayer-0.3.30/lib/fog/softlayer/models/compute/server.rb:418:in `extract_flavor': undefined method `cpu' for nil:NilClass (NoMethodError)
    from /home/user/.chefdk/gem/ruby/2.1.0/gems/fog-softlayer-0.3.30/lib/fog/softlayer/models/compute/server.rb:122:in `pre_save'
    from /home/user/.chefdk/gem/ruby/2.1.0/gems/fog-softlayer-0.3.30/lib/fog/softlayer/models/compute/server.rb:311:in `save'
    from /opt/chefdk/embedded/lib/ruby/gems/2.1.0/gems/fog-core-1.32.1/lib/fog/core/collection.rb:51:in `create'
    from /home/user/.chefdk/gem/ruby/2.1.0/gems/knife-softlayer-0.4.0/lib/chef/knife/softlayer_server_create.rb:304:in `run'
    from /opt/chefdk/embedded/lib/ruby/gems/2.1.0/gems/chef-12.5.1/lib/chef/knife.rb:405:in `block in run_with_pretty_exceptions'
    from /opt/chefdk/embedded/lib/ruby/gems/2.1.0/gems/chef-12.5.1/lib/chef/local_mode.rb:44:in `with_server_connectivity'
    from /opt/chefdk/embedded/lib/ruby/gems/2.1.0/gems/chef-12.5.1/lib/chef/knife.rb:404:in `run_with_pretty_exceptions'
    from /opt/chefdk/embedded/lib/ruby/gems/2.1.0/gems/chef-12.5.1/lib/chef/knife.rb:203:in `run'
    from /opt/chefdk/embedded/lib/ruby/gems/2.1.0/gems/chef-12.5.1/lib/chef/application/knife.rb:142:in `run'
    from /opt/chefdk/embedded/lib/ruby/gems/2.1.0/gems/chef-12.5.1/bin/knife:25:in `'
    from /usr/bin/knife:54:in `load'
    from /usr/bin/knife:54:in `'

[benjsmi]

This seems to be due to a lack of specifying the --cores option.