phab:T36532
"MediaWiki:Mwe-upwiz-license-public-domain-usa-subhead" does not have support for {{SITENAME}}, as "mwe-upwiz-license-public-domain-usa-subhead: unknown operation "sitename"" appears instead of the message in Upload Wizard (on Commons).
Please create a new issue in bugzilla: and be sure to include a screenshot and preferably also a URL.