5.4.0-1068 doesn't seem to be a supported version per the version guide - https://learn.microsoft.com/en-us/azure/site-recovery/azure-to-azure-support-matrix#supported-ubuntu-kernel-versions-for-azure-virtual-machines
As far your question "The confusion that I have is that it worked on Friday when I did the same activity on the same machine.
Why this error now ?"
It may or may not work. The reason why we don't have that version under supported version is due to some issues during testing face.
If the response helped, do "Accept Answer" and up-vote it
I know.
The confusion that I have is that it worked on Friday when I did the same activity on the same machine.
Why this error now ?
the kernel is 5.4.0-1068-azure