Dear Friends, I got following error message when checkin a book, Software error: Can't call method "truncate" on an undefined value at /usr/share/koha/lib/C4/Circulation.pm line 1966. For help, please send mail to the webmaster ([no address given]), giving this error message and the time and date of the error. Version of Koha is 3.20.1 Ubuntu 14.04. Request guidance to solve this problem. Regards, -- Vimal Kumar V. Technical Assistant Mahatma Gandhi University Library Kottayam, Kerala- 686 560 Web: http://www.vimalkumar.info Blog: http://linuxhalwa.blogspot.com http://kohageek.blogspot.in http://moovandan.blogspot.in --------------------------------------------------------------------------- "I forget what I was taught. I only remember what I have learnt" -Patrick White