Upgrade rsbackup 6.0 to 8.0 | WARNING: time interval '14' should have a unit

[Samuel Wolf]

Hi,

we upgrade from Debian 11 to 12 / rsbackup 6.0 to 8.0.
Now there is the following warning "WARNING: time interval '1' should
have a unit", but how to add the unit?

WARNING: time interval '14' should have a unit
ERROR: invalid integer '14d'
ERROR: invalid integer '14-'
ERROR: /etc/rsbackup/test/debian:3: too many arguments to 'prune-parameter'

I have tried the following:
prune-parameter prune-age 14 # old
prune-parameter prune-age 14d
prune-parameter prune-age 14-d
prune-parameter prune-age 14 d

Unfortunately I can't find it in the manual or I overlook it.

Samuel