vdsn on "[Plugin: WP Clone by WP Academy] Error Message : MySQL server has gone away"

saw this error while running a backup. the backup never finished.

The plugin encountered an error during the database backup,the following error message was returned:
Error Message : MySQL server has gone away

Temporary files created in ---- will be deleted.

looks like the db itself is 21.60MB

http://wordpress.org/extend/plugins/wp-clone-by-wp-academy/