[Koha] OPAC error

[Jonson philip]

hi all . i have the following errors in koha-opac-err.log , i'm using koha
3.2.0.2 on ubuntu , any suggestions ??  thank's

PARAM:LOOP:next_loop(0): callback returned null scope, referer:
http://192.168.1.66/cgi-bin/koha/opac-search.pl

HTML::Template::Pro:in TMPL_LOOP at pos 416: , referer:
http://192.168.1.66/cgi-bin/koha/opac-detail.pl?biblionumber=11549
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