https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22829 Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |caroline.cyr-la-rose@inlibr | |o.com --- Comment #1 from Caroline Cyr La Rose <caroline.cyr-la-rose@inlibro.com> --- I've run into this problem also. I think the records had been migrated from another system and a lot of 245$b were simply blank. ES did not like this. This is the (very cryptic) error message Use of uninitialized value $_ in pattern match -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.