Urbackup clt v 2.4.10 Ubuntu 12.04 can't use LVM snap

Hi all. Please help.

I use ubuntu 12.04 and I have a problem with LVM snap.

My lvm looks like this:

  VG   #PV #LV #SN Attr   VSize  VFree 
  vg00   1   1   0 wz--n- 44,50g 11,12g
  vg01   1   2   1 wz--n-  2,21t 22,09g

  LV     VG   Attr   LSize  Origin Snap%  Move Log Copy%  Convert
  lvol00 vg00 -wi-ao 33,37g                                      
  lvol00 vg01 owi-ao  2,17t  

I have enabled debug.

Backup log says me:

2020-01-22 14:38:01: ERROR: Volume group "**mapper**" not found
2020-01-22 14:38:01: done.
2020-01-22 14:38:01: ERROR: Creating snapshot of "opt" failed.  

group mapper? I don’t have group mapper. Please help me.

Hey all, I suppose there is a problem with path:

in Ubuntu 14.04.5 I have /dev/dm-1 /dev/dm-2 and so on but in old ubuntu I have: /dev/mapper/

Can you help me, please?