I have followed the instructions from the documentation.
WordPress importer errors out:
405 Not Allowed
Sorry, there has been an error.
File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your php.ini or by post_max_size being defined as smaller than upload_max_filesize in php.ini.
php.ini is not diabled and post & upload max file sizes set to 64M