Sim in Library has corruption
Image 1, showing the family of five in the Library. Each Sim is featured in the family photo, including the Sim who can't be loaded on the sidebar (the Sim with the green jacket).
Image 2, stating that an item associated with this Sim, or an instance item of this Sim is corrupted and asking if I would like to remove it ('Item is corrupted, would you like to remove it?').
Is this something I ought to be concerned about and take action on, such as removing this family from the Library? Is it possible to restore this Sim? If I select 'remove', will the family or the individual Sim be deleted, or will an associated item, such as a corrupted piece of clothing, be removed and the rest of the household left intact? What could have caused this in the first place? Note that I have not played with this family, just made them and then saved them to the library.