[Koha] error generated by writing off fine

[Scott Owen]

{UNKNOWN}: Can't call method "unblessed" on an undefined value at
/usr/share/koha/lib/C4/Circulation.pm line 2181, <DATA> line 751. at
/usr/share/koha/lib/C4/Circulation.pm line 2201

For help, please send mail to the webmaster ([no address given]), giving
this error message and the time and date of the error.



--- patron had a fine...patron paid part of fine....librarian "wrote off"
the rest of the fine...when fine write off button was pressed ...this error
message popped up.

 -S