MediaWiki:Paramvalidator-badupload-notupload
From Opensim City Wiki
File upload parameter "$1" is not a file upload; be sure to use multipart/form-data for your POST and include a filename in the Content-Disposition header.
File upload parameter "$1" is not a file upload; be sure to use multipart/form-data for your POST and include a filename in the Content-Disposition header.