[Koha] Deleted Biblio breaks search

Happy new year folks! I think i stumbled on a bug or something got awfully bad. I deleted a biblio, and apparently after that all searches on OPAC and Intranet with a related key-word (e.g if i search nutrition) koha brings up this error: Can't call method "as_usmarc" on an undefined value at /usr/share/koha/lib/C4/Search.pm line 2384. Is there a way to fix this?