mjhjmtu

I have a problem when running rsnapshot for backing up a network mapped drive directory to my local client via cron (and only via a scheduled job).
If I run rsnapshot in a CYGWIN terminal manually I get not errors, while when running via a cron job I get this weird error log:

[2019-03-06T13:30:07] /usr/bin/rsnapshot -c /etc/defaults/etc/rsnapshot.conf alpha: ERROR: ---------------------------------------------------------------------
[2019-03-06T13:30:07] /usr/bin/rsnapshot -c /etc/defaults/etc/rsnapshot.conf alpha: ERROR: Errors were found in /etc/defaults/etc/rsnapshot.conf,
[2019-03-06T13:30:07] /usr/bin/rsnapshot -c /etc/defaults/etc/rsnapshot.conf alpha: ERROR: rsnapshot can not continue. If you think an entry looks right, make
[2019-03-06T13:30:07] /usr/bin/rsnapshot -c /etc/defaults/etc/rsnapshot.conf alpha: ERROR: sure you don't have spaces where only tabs should be.
[2019-03-06T13:45:02] /usr/bin/rsnapshot -c /etc/defaults/etc/rsnapshot.conf alpha: ERROR: /etc/defaults/etc/rsnapshot.conf on line 227:
[2019-03-06T13:45:02] /usr/bin/rsnapshot -c /etc/defaults/etc/rsnapshot.conf alpha: ERROR: backup 
 /cygdrive/N/<source_here>/ 
 localhost/ - Source directory 
 "/cygdrive/N/<source_here>/" 
 doesn't exist 

I double checked the source directory address, which is: /cygdrive/N/.../, even with the command

rsnapshot /etc/defaults/etc/rsnapshot.conf configtest

which ended with a Syntax OK statement.
Again, no issues when running manually, problems when running as a scheduled job.
Any idea? Thank you.