error

Hi, I did a backup and I got this message. On monday I did another backup and worked just fine. Could you please help me. thank you so much:

ERROR: ZipArchive returns status: Write error: Disk quota exceeded
[10-Feb-2016 20:51:40] ERROR: ZIP archive cannot be closed correctly
[10-Feb-2016 20:51:41] WARNING: filesize(): stat failed for /home/castell/public_html/wordpress/wp-content/uploads/backwpup-7938d2-backups/backwpup_7938d2_2016-02-10_20-51-40.zip
[10-Feb-2016 20:51:41] ERROR: If will be added to your backup archive, the archive will be too large for operations with this PHP Version. You might want to consider splitting the backup job in multiple jobs with less files each.
[10-Feb-2016 20:51:41] WARNING: filesize(): stat failed for /home/castell/public_html/wordpress/wp-content/uploads/backwpup-7938d2-backups/backwpup_7938d2_2016-02-10_20-51-40.zip
[10-Feb-2016 20:51:41] ERROR: Cannot create backup archive correctly. Aborting creation.

https://ww.wp.xz.cn/plugins/backwpup/