Board Thread:Wiki discussion/@comment-38995466-20190401221105/@comment-4812386-20190402003013

MediaWiki:Titleblacklist sometimes prevents uploads of files with non-descriptive names. The message shown is at MediaWiki:Titleblacklist-forbidden-upload and it isn't very helpful. (Unfortunately, we can't edit it.)

You can try reuploading the file with a different name.