Linux Image Backup fails - "EFI System Partition failed"

Let me start off by saying I am not dual booting. I installed urbackup on 2 different linux clients and both are having the same issue. I try to do an image back up and it fails with this in the log -

Backing up EFI System Partition failed. Image backup failed

Is there a way around this? I have heard older versions work but current does not?

The 2.5.20 client works and doesn’t throw the error. I get the same error on dual boot system that has an EFI partition and had to revert to the 2.5.20 version on client.

Sorry if this seems dense, but is there an easy way to downgrade?

I had initially installed the client from command line indicated here:
http://www.urbackup.org/download.html#linux_all_binary

I did not uninstall the newer client, I just ran this to re-install the version 2.5.20:

TF=$(mktemp) && wget "https://hndl.urbackup.org/Client/2.5.20/UrBackup%20Client%20Linux%202.5.20.sh" -O $TF && sudo sh $TF; rm -f $TF

NOTE: you have to change the version in that shell command in two places to the 2.5.20 version or whatever version you want to install.

Yeah, seems the 2.5.20 version has been removed. If you manually go to that URL it doesnt exist. Earliest it shows is 2.5.22. I tried that and it still fails.

Request of image backup failed. Reason: Creating shadow copy failed. See client log file for details.