Dear All Recently I have upgraded from koha 3.2.9 to 3.8.1 and after that when I want to add new patron or edit existing patron information it returns error as like below: Software error: Can't use an undefined value as an ARRAY reference at /usr/share/koha/lib/C4/Members.pm line 1593. Please suggest me what is the possible cause and what to do to solveit. *With Warm Regards* Mohammad Joynal Abdin MA in ISLM, DU MCSA, MCSE Assistant Library Officer Daffodil International University Cell: 01811458896 Ext. 152