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 ONLY A TESTWIKI! LH, MW 1.43.9, PHP 8.3.31, SMW 6
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.