[Koha] Zebra is not indexing

[Arayik Manukyan]

Hi List,

We have Koha 3.20.14 tarball on ubuntu  12.04 LTS,

  Zebra is  not indexing,  it is not searching in OPAC and intranet 
and   have brought such  information

***********************************************************

koha at host-93-94-220-102:/usr/share/koha/bin/migration_tools$ 
./rebuild_zebra.pl <http://rebuild_zebra.pl> -b  -r -v
Zebra configuration information
================================
Zebra biblio directory      = /var/lib/koha/zebradb/biblios
Zebra authorities directory = /var/lib/koha/zebradb/authorities
Koha directory              = /usr/share/koha/intranet/cgi-bin
Lockfile                    = /var/lock/koha/zebradb/rebuild/rebuild..LCK
BIBLIONUMBER in :     999$c
BIBLIOITEMNUMBER in : 999$d
================================
skipping authorities
====================
exporting biblio
====================
1..
Records exported: 3
====================
REINDEXING zebra
====================
====================
CLEANING
====================
*****************************************************************************

May be it depend of  koha version or its compability with ubuntu version.

But  we use koha 3.20.05 on ubuntu 12.04 LTS which works perfectly.

What latest version *** do you suggest us to use ?

Thanks,

Araik.