zfs diff: Unable to determine path or stats for object

[Miroslav Lachman]

Hi,

I have a problem with zfs diff on our backup storage. I want to find 
some details about differencies but it almost always ends with error:

# zfs diff tank0/vol0/remote_backup/edith at autodel-2017-11-13_13-48 
tank0/vol0/remote_backup/edith at autodel-2017-11-14_13-48 > 
/tmp/zfs_diff_edith_13_14
Unable to determine path or stats for object 34939 in 
tank0/vol0/remote_backup/edith at autodel-2017-11-13_13-48: Invalid argument


Another two examples of error messages:

Unable to determine path or stats for object 108311 in 
tank0/vol0/remote_backup/elsa at autodel-2017-11-13_13-48: Invalid argument

Unable to determine path or stats for object 22061 in 
tank0/vol0/remote_backup/edith at autodel-2017-11-12_13-48: Invalid argument

What this error means?
How can I debug and fix this issues?

Kind regards
Miroslav Lachman