[Koha] rebuild index

[regina kivuyo]

thanks indranil
i  successful installed version 3.18 in ubuntu 12.04 ,when i ran  sudo -u
koha misc/migration_tools/rebuild_zebra.pl -b -r -v without data in
database it work well ,but
i import data
when i ran sudo -u koha misc/migration_tools/rebuild_zebra.pl -b -r -v

it will give me this error :
 [warn] No such record type:
dom./etc/koha/zebradb/biblios/etc/dom-config-marc.xml

how to solve the error

help please

-- 
regina