[Koha] error in rebuild zebra - need help

[Jonson philip]

hi
when i tring to rebuild zebra with r b or with a r b  i getting this error .
any help

*16:12:01-19/11 zebraidx(5224) [warn] Unknown register type: 0
** 16:12:01-19/11 zebraidx(5224) [warn] Unknown register type: n
** 16:12:01-19/11 zebraidx(5224) [warn] Unknown register type: y
** 16:12:01-19/11 zebraidx(5224) [warn] Unknown register type: d
*
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