MediaWiki:Apierror-badupload
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.
This is an information resource mainly written for trans US citizens considering emigrating to another country, although we hope it is useful beyond that.
Please treat this wiki as a starting point for your own research, not as an authoritative source of truth or as legal advice.
Many of the authors have gone through the process themselves and want to share what they have learned.
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.