Unable to parse server response to SIZE command

This is the error I am getting when backing up to ftp backup space from server provider (ovh).

Mostly it works but every 5th / 6th backup fails.

Hello,

To investigate this case we need more details. Could you please send us a full text of the error message or a screenshot of an error?

log:

4:50:34 PM : Getting “database123201709041647.zip” file size at “ftpback-123456.ovh.net”…
4:50:35 PM : WARNING: Destination error: Unable to parse server response to SIZE command.
4:50:35 PM : Trying again…
4:50:36 PM : WARNING: Destination error: Unable to parse server response to PASV command.
4:50:37 PM : Getting “database123201709041647.zip” file size at “ftpback-123456.ovh.net”…
4:50:38 PM : WARNING: Destination error: Unable to parse server response to SIZE command.
4:50:38 PM : Trying again…
4:50:40 PM : WARNING: Destination error: Unable to parse server response to PASV command.
4:50:41 PM : Getting “database123201709041647.zip” file size at “ftpback-123456.ovh.net”…
4:50:41 PM : WARNING: Destination error: Unable to parse server response to SIZE command.
4:50:42 PM : Trying again…
4:50:43 PM : WARNING: Destination error: Unable to parse server response to PASV command.
4:50:44 PM : Getting “database123201709041647.zip” file size at “ftpback-123456.ovh.net”…
4:50:45 PM : WARNING: Destination error: Unable to parse server response to SIZE command.
4:50:45 PM : Trying again…
4:50:47 PM : WARNING: Destination error: Unable to parse server response to PASV command.
4:50:48 PM : Getting “database123201709041647.zip” file size at “ftpback-123456.ovh.net”…
4:50:50 PM : Deleting file “database123201709041647.zip”
4:50:50 PM : ERROR: Destination error: [DST-2:1103#12] Failed to upload “D:\tmp\Pranas.NET\SQLBackupAndFTP\backup\database123201709041647.zip” file. > Unable to parse server response to SIZE command.
4:50:52 PM : Disconnecting from FTP destination “ftpback-123456.ovh.net

Thank you for the issue reporting, please give us some time to check and fix it.