[Updraftplus] The backup attempt has finished, apparently unsuccessfully

Hi I’m having a problem backing up my website. Looking at the log, It seems to loop here:

3038.664 (9) Beginning backup of other directories found in the content directory (index: 0)
3038.667 (9) Exclusion option setting (others):
3038.670 (9) Looking for candidates to backup in: /var/www/html/wp-content
3038.673 (9) finding files: themes: skipping: this is the themes directory
3038.677 (9) finding files: updraft: skipping: this is the updraft directory
3038.682 (9) finding files: breeze-config: adding to list (1)
3038.685 (9) finding files: ngg: adding to list (2)
3038.688 (9) finding files: gallery: adding to list (3)
3038.692 (9) finding files: uploads: skipping: this is the uploads directory
3038.695 (9) finding files: upgrade-temp-backup: adding to list (4)
3038.702 (9) finding files: languages: adding to list (5)
3038.705 (9) finding files: mu-plugins: skipping: this is the mu-plugins directory
3038.709 (9) finding files: w3tc-config: adding to list (6)
3038.713 (9) finding files: index.php: adding to list (7)
3038.715 (9) finding files: upgrade: adding to list (8)
3038.719 (9) finding files: plugins: skipping: this is the plugins directory
3038.722 (9) finding files: php.ini: adding to list (9)
3038.726 (9) finding files: mc_data: adding to list (10)
3038.729 (9) finding files: wflogs: adding to list (11)
3038.733 (9) finding files: cache: adding to list (12)
3038.736 (9) finding files: advanced-cache.php: adding to list (13)

and then finally:

Backup run: resumption=10, nonce=6c2aba993014, file_nonce=6c2aba993014 begun at=1743489970 (3338s ago), job type=backup
3338.423 (10) [Updraftplus] The backup is being aborted for a repeated failure to progress.
3338.427 (10) An error condition has occurred for the first time during this job
3338.429 (10) [Info] Lock option (updraft_lock_6c2aba993014, wp_options) released
3338.434 (10) No email will/can be sent – the user has not configured an email address.
3338.436 (10) The backup attempt has finished, apparently unsuccessfully