ios - UITableView internal bug: unable to generate a new section map with old section count: and new section count: with userInfo (null) -


i haven't seen error before, , did search why may happening couldn't find info on it:

coredata: error: serious application error. exception caught delegate of nsfetchedresultscontroller during call -controllerdidchangecontent:. uitableview internal bug: unable generate new section map old section count: 1 , new section count: 0 userinfo (null)

does know might happening here? not sure "internal bug" part - error indicate problem code or bug in uitableview?

did use nsfetchedresultscontroller in multiple uitableview. if so, that's cause. use 1 nsfetchedresultscontroller 1 uitableview. not switch queries when switching views.


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