Doing this search: https://catalogo.sgc.gov.co/cgi-bin/koha/opac-search.pl?q=Ley+99+de+1993&branch_group_limit= it returns 6 results, for 5 of them I get: Software error: Can't call method "title" on an undefined value at /usr/share/koha/opac/cgi-bin/opac/opac-detail.pl line 459. For help, please send mail to the webmaster ([no address given]), giving this error message and the time and date of the error. We have koha in Ubuntu 16.04 and Koha 18.05. Other searches are ok. Thank you
I had a similiar problem, please check if your data is consistent ie test libraries or something like this maybe upgrade to a recent version of koha
Hi Pablo, Either your search engine did not have its index up-to-date, or you were facing bug 25826. I am closing this bug report, please reopen if it's still valid.