[Koha] Can't call method "subfield" on an undefined value at /usr/share/koha/lib/C4/Biblio.pm line 2919.

[Vikas Salunkhe]

Dear all,
i am trying to  edit items and click save changes following error is
comming

Software error:

Can't call method "subfield" on an undefined value at
/usr/share/koha/lib/C4/Biblio.pm line 2919.

 For help, please send mail to the webmaster (webmaster at vikas), giving this
error message and the time and date of the error.


pleas help to solve  this problem


Vikas Salunkhe