We have started experiencing a recent issue where attempting to check out one item results in multiple of those items (same barcode, checked out multiple times) being checked out to the one patron. This does not happen to every item, nor does it happen to every patron. I am not sure if this error has to do with the problem, but I am seeing errors like: [Tue Oct 10 15:49:58.258993 2017] [cgi:error] [pid 20067] [client 41.89.41.2:23363] AH01215: [Tue Oct 10 15:49:58 2017] additem.pl: DBIx::Class::Storage::DBI::select_single(): Query returned more than one row. SQL that returns multiple rows is DEPRECATED for ->find and ->single at /usr/share/koha/lib/Koha/Objects.pm line 92, referer: http://opac.scott.ac.ke:8080/cgi-bin/koha/cataloguing/additem.pl?op=edititem&biblionumber=15157&itemnumber=25724 showing up in the internet-error.log Any clue how I should begin tracking this down? - Tim