https://wordpressdeveloperonline.com/fix-wordpress-missing-archive-file-or-download-failed/
So here we discuss how to fix WordPress missing Archive file or download failed.
1. Go to Your wp-content folder via log in to your C panel or by FTP access. Path is: Your Domain/wp-content
2. Once you open the wp-content folder. create new folder under wp-content. it’s called temp.
3. Download your wp-config.file from your server in your computer. Edit this file and find the below line of code.
if ( !defined('ABSPATH') )
define('ABSPATH', dirname(__FILE__) . '/');
4. Add following line of code after that.
/*Set WordPress temporary directory */
define('WP_TEMP_DIR', ABSPATH . 'wp-content/temp');
5. Save this wp-config.php file and upload/replace this file to your server.