[Koha] Koha cirulcation error after upgrade to Koha 19.11.02

[Admire Mutsikiwa]

Hi

I am running Koha 19.11.02 on Ubuntu 18.04 LTS. When  I try to search 
for a patron record using barcode, I am getting the following error

Can't call method "subtract" on an undefined value at 
/usr/share/koha/lib/Koha/Patron.pm line 695.: 
/usr/share/koha/intranet/cgi-bin/circ/circulation.pl.


However, when I search using the name I do not seem to get that error.


Kind Regards,


Admire Mutsikiwa