Missing PATH_INFO. Your server is not set up to pass this information. It may be CGI-based and cannot support img_auth. See https://www.mediawiki.org/wiki/Manual:Image_Authorization.
MediaWiki:Img-auth-nopathinfo
From Cigarettes Pedia
Missing PATH_INFO. Your server is not set up to pass this information. It may be CGI-based and cannot support img_auth. See https://www.mediawiki.org/wiki/Manual:Image_Authorization.