Fixed undefined method error in SitesCommand#massUpdate

CHANGELOG.md

@@ -19,6 +19,7 @@ All notable changes to this project starting with the 0.6.0 release will be docu
 - Fixed undefined-variable bug which appears when a user has one machine token saved but is logged out. (#1053)
 - Multiline option details will now fully appear in help output. (#1055)
 - `TERMINUS_PLUGINS_DIR` now overrides the plugin directory appropriately. (#1062)
+- Undefined method error while running `sites mass-update` has been fixed. (#1064)
 
 ## [0.11.1] - 2016-03-30
 

php/Terminus/Commands/SitesCommand.php

@@ -451,9 +451,9 @@ public function massUpdate($args, $assoc_args) {
           if (!$confirmed) {
             continue; // User says No, go back to start.
           }
-          // Backup the DB so the client can restore if something goes wrong.
+          // Back up the site so it may be restored should something go awry
           $this->log()->info('Backing up {site}.', $context);
-          $backup = $env->createBackup(array('element'=>'all'));
+          $backup = $env->backups->create(['element' => 'all',]);
           // Only continue if the backup was successful.
           if ($backup) {
             $this->log()->info('Backup of {site} created.', $context);