Plesk backup to OneDrive fails: Call to a member function getNextExpectedRanges() on array

Symptoms

• Plesk backup to OneDrive Backup storage fails with the following error message at Tools & Settings > Backup Manager:

  PLESK_WARN: The backup Jan 31, 1970 08:13 PM was created and can be restored, although some minor issues occurred.

• The following error is shown when clicking View the log:

  PLESK_INFO: Backup Task Jan 31, 1970 08:13 PM Details
  Warning:
  Unable to upload the backup to the external storage: Transport error: Failed to write a file to an external repository, see the log files

• The following error message appears in /var/log/plesk/PMM/backup-<timestamp>/backup.log:

  CONFIG_TEXT: ERR (3) [panel]: Call to a member function getNextExpectedRanges() on array:
  0: /opt/psa/admin/plib/modules/one-drive-backup/library/OneDrive.php:335
  Modules_OneDriveBackup_OneDrive->putFile(string 'backup_1907312013.tar_/backup_1907312013.tar248', string '/tmp/pmm-rte-wftb-buf-xceGxU')
  1: /opt/psa/admin/plib/modules/one-drive-backup/hooks/Backup/Transport.php:193
  Modules_OneDriveBackup_Backup_Transport->{closure}()
  2: /opt/psa/admin/plib/modules/one-drive-backup/hooks/Backup/Transport.php:294
  Modules_OneDriveBackup_Backup_Transport->runWithAttempts(object of type Closure)
  3: /opt/psa/admin/plib/modules/one-drive-backup/hooks/Backup/Transport.php:194
  Modules_OneDriveBackup_Backup_Transport->appendFile(string '5d41db41085976.25580213', string '/tmp/pmm-rte-wftb-buf-xceGxU')
  ...

Cause

This is a Plesk bug with ID EXTPLESK-1147, which has already been fixed in Plesk Obsidian.

Resolution

Upgrade Plesk to Obsidian.