Production enable apache

[Vanuan]

Have this error:

==> default: Error executing action `run` on resource 'execute[enable apache site]'
==> default: ================================================================================
==> default: 
==> default: 
==> default: Mixlib::ShellOut::ShellCommandFailed
==> default: ------------------------------------
==> default: Expected process to exit with [0], but received '1'
==> default: 
==> default: ---- Begin output of sudo a2ensite ckan_default ----
==> default: 
==> default: STDOUT: 
==> default: 
==> default: STDERR: ERROR: Site ckan_default does not exist!
==> default: 
==> default: ---- End output of sudo a2ensite ckan_default ----
==> default: 
==> default: Ran sudo a2ensite ckan_default returned 1
==> default: 
==> default: 
==> default: Resource Declaration:
==> default: ---------------------
==> default: # In /tmp/vagrant-chef/c701bf572f7173b605faa42f76a80d79/cookbooks/ckan/recipes/ckan_production.rb
==> default: 
==> default: 
==> default: 
==> default:  40: execute "enable apache site" do
==> default: 
==> default:  41:     command "sudo a2ensite ckan_#{node[:ckan][:project_name]}"
==> default: 
==> default:  42: end

[Vanuan]

The problem is, it requires .conf extension.