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Recipe Compile Error in /var/chef/cache/cookbooks/openstack-identity/recipes/server-apache.rb
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NoMethodError
-------------
undefined method `-' for nil:NilClass

Cookbook Trace:
---------------
  /var/chef/cache/cookbooks/openstack-identity/recipes/server-apache.rb:282:in `from_file'

Relevant File Content:
----------------------
/var/chef/cache/cookbooks/openstack-identity/recipes/server-apache.rb:

275:    user node['openstack']['identity']['user']
276:    command "keystone-manage token_flush > #{log_file} 2>&1; "\
277:            "echo keystone-manage token_flush ran at $(/bin/date) with exit code $? >> #{log_file}"
278:  end
279:
280:  #### Start of Apache specific work
281:
282>> listen_addresses = node['apache']['listen_addresses'] - ['*'] + [bind_address, admin_bind_address]
283:  listen_ports = node['apache']['listen_ports'] - ['80'] + [identity_endpoint.port, identity_admin_endpoint.port]
284:  node.set['apache']['listen_addresses'] = listen_addresses.uniq
285:  node.set['apache']['listen_ports'] = listen_ports.uniq
286:
287:  include_recipe 'apache2'
288:  include_recipe 'apache2::mod_wsgi'
289:  include_recipe 'apache2::mod_ssl' if node['openstack']['identity']['ssl']['enabled']
290:
291:  keystone_apache_dir = "#{node['apache']['docroot_dir']}/keystone"

[2016-03-17T13:12:10+05:30] DEBUG: Re-raising exception: NoMethodError - undefined method `-' for nil:NilClass
/var/chef/cache/cookbooks/openstack-identity/recipes/server-apache.rb:282:in `from_file'