If you don't have Play Store, you can download Titanium Backup from here : https://bit.ly/2BOJEUE

Titanium Backup has been updated to v3.1.8

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  • MAJOR BUG FIXED: Many batch actions did not work when started from a Schedule or Widget. Mea culpa…
  • Fixed “An operation is already in progress” after “delete all backups”.
  • Allow “backup all user apps + system data” batch action for scheduler and widgets.
  • Created new “backup all system data” batch action (also for scheduler and widgets).