Upgrade to 6.5 from 4.5, error of absolute path names

My syncgateway has stopped and will not run. It will go to pause.
Therefore i decided to update syncgateway but did not fix.

I am on Couchbase 4.5, so i decided to upgrade to 5 => 6.5

The docs suggest to backup my nodes and i cannot get cbbackupmgr to work !

When i use:
cbbackupmgr config --archive /data/backups --repo backup2020

i get the error of:
lockfiles must be given as absolute path names