• The BIND DNS server has already been deprecated and removed from Plesk for Windows.
    If a Plesk for Windows server is still using BIND, the upgrade to Plesk Obsidian 18.0.70 will be unavailable until the administrator switches the DNS server to Microsoft DNS. We strongly recommend transitioning to Microsoft DNS within the next 6 weeks, before the Plesk 18.0.70 release.
  • The Horde component is removed from Plesk Installer. We recommend switching to another webmail software supported in Plesk.

Resolved [PPPM-13733] Urgently - can't concat str to bytes

Fixed in 18.0.47 #1
Creation of a domain backup no longer fails when the “Exclude log files” or “Exclude specific files from the backup” options are enabled. (PPPM-13733)

Please update.
 
After update on 18.0.47.1 backup to remote still failed: expected str, bytes or os.PathLike object, not int
 
Some news on this: A new knowledge base article explains that selecting "Multi Volume Backup" still causes the issue. Thanks to @Misho who posted this here:
 
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