[Koha] Koha migration

Dear All, I have successfully migrate my Koha 3.2 to Koha 3.8 every thing is OK but when add a new item could not add a error message appear "Can't call method "subfield" on an undefined value at /usr/share/koha/lib/C4/Biblio.pm line 2997" any can hep me please.....? Thanks Yoonus