Warm spare backup failing after upgrading to FreePBX 16

[cyeit]

Yesterday I upgraded my 2 FreePBX servers from 15 to 16

Now my warm spare backup does not work, here is the message in the log

Finished created backup file: 20230802-091244-1690963964-16.0.40.4-1671669990.tar.gz
Performing Local Maintenance
Finished Local Maintenance
Performing Remote Maintenance
Could not login with username: root, host: xxx.xxx.xxx.xxx
Finished Remote Maintenance
Saving to selected Filestore locations
Saving to: SSH:‘SSH-voipserver-2’ instance ,File location: /var/spool/asterisk/backup/20230802-091244-1690963964-16.0.40.4-1671669990.tar.gz
Finished Saving to selected Filestore locations
There were errors during the backup process
Could not login with username: root, host: xxx.xxx.xxx.xxx
There were warnings during the backup process
The module setcid returned no data, No backup created
The module ttsengines returned no data, No backup created
Generated Backup process result email to [email protected]. Status: Failure
Warmspare enabled for this backup
We Have triggered an API to restore the backup on Spare Server
Response from Warmspare backup Server API
clientMutationId :xxxxxxxxxxxxxxxxxxx
Restorestatus :Backup file not found

I have tried these things

1. Updated the warm spare API client ID, Secret and Token
2. Copying the private key from the secondary to the primary
3. Using SSH rather than API in the warm spare options

What else do I need to check to allow access?

[dobrosavljevic (Igor Dobrosavljevic)]

Are all the modules and system packages on the new system fully up to date? If so maybe try deleting the warm spare backup settings and fully recreating them.