error on backup v2.2

when I went back to home screen the back up I just made is not listed , but it is in the folder. just not showing in plug home

yeah that was a known issue in 2.1.9.

anyway, the only differences between the two versions (as far as backups are concerned) are in the database sections, nothing was changed in the archiving sections.
the only thing I can think that would make a difference is the folder scan that runs when you open the plugin page, that could put an extra load on the server if a backup is running at the same time. could you upgrade to 2.2, remove the following line from wpclone.php and try another backup?
add_action( 'wp_ajax_wpclone-ajax-size', 'wpa_wpc_ajax_size' ); it’s @ line 31 if you’re using a code editor.

v2.2

line commented out

Warning: filesize(): stat failed for /home/miafters/public_html/wp-content/uploads/wp-clone/wpclone_backup_23rd_Nov_2015_12-59PM_Mic_jnN6KwU4k0.zip in /home/mia/public_html/wp-content/plugins/wp-clone-by-wp-academy/lib/functions.php on line 186
Backup Successful!

Here is your backup file :
https://miafterschool.com/wp-content/uploads/wp-clone/wpclone_backup_23rd_Nov_2015_12-59PM_Mic_jnNU4k0.zip ( B ) | Copy URL

I don’t get it, except for some changes in the database backup sections, they’re identical.