I have the same error, but the disk has more than enough space. Here’s the log
29. 09. 2023 23:32:48 [Error] Failed to backup "Eba_OkoljePiran" database with "Full" backup type: Xceed archiver error. > An unexpected internal failure occurred in the FileSystem component, or one of its descendants.
Type: Xceed.Zip.ZipArchive
FullName: \ > There is not enough space on the disk.
29. 09. 2023 21:30:00 [Info] Starting scheduled job "Eba dnevno" - "Full". Server "SQLSERVER2019". System account "SYSTEM@JPO". App v."12.7.18".
29. 09. 2023 21:30:00 [Info] Connecting to "SQL Server": "(default)".
29. 09. 2023 21:30:00 [Info] Connected to "SQL RTM Standard Edition (64-bit)".
29. 09. 2023 21:30:00 [Info] The temporary folder "E:\temp\Pranas.NET\SBF\cc2e6e8f-9812-4205-bfb1-298c70f0b02a\backup" has "229,558GB" free space.
29. 09. 2023 21:30:00 [Info] Backing up "(default)" SQL Server databases.
29. 09. 2023 21:30:00 [Info] Backing up "Eba_OkoljePiran" with "Full" backup type.
29. 09. 2023 21:53:54 [Info] Database "Eba_OkoljePiran" successfully backed up to "E:\temp\Pranas.NET\SBF\cc2e6e8f-9812-4205-bfb1-298c70f0b02a\backup\Eba_OkoljePiran20230929.bak : 85,154GB".
29. 09. 2023 21:53:54 [Info] Compressing "E:\temp\Pranas.NET\SBF\cc2e6e8f-9812-4205-bfb1-298c70f0b02a\backup\Eba_OkoljePiran20230929.bak" file with Internal archiver. Encryption: "Off".
29. 09. 2023 23:32:51 [Info] Cleaning up backups of "Eba dnevno" job.
29. 09. 2023 23:32:51 [Info] Deleting temporary files.
29. 09. 2023 23:32:51 [Error] Job "Eba dnevno" finished with "1" errors.
29. 09. 2023 23:32:57 [Info] Sending job log to informatika@okoljepiran.si.
29. 09. 2023 23:32:57 [Info] Sending report to ${https://sqlbackupandftp.com/weblog?jobid=cc2e6e8f-9812-4205-bfb1-298c70f0b02a|Web Log}.
Disk E: has 230 gb of free space.

I don’t understand why SBF reports that there’s not enough disk space.
Please help, because we’re without a backup mechanism at the moment!