No citation style options when creating bibliography from item
I have been using Zotero for years, and when I need to get a citation for an individual reference, I just right click, select "create bibliography from item", confirm the citation style, output mode, and output method. For the last four days, I have not had any citation styles appear (the entire window is empty). I have restarted, confirmed that it is synced, checked for updates, and nothing obvious seems wrong. Any suggestions? I have looked and can't seem to find any similar posts here.