Report ID 853819035
Unable to load styles and translators
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In your case, you may be able to fix this by resetting translators and styles from the Advanced → Files and Folders pane of the Zotero preferences. You should then check the database integrity from that same pane.
If that fails, you can try to fix the damage with the DB Repair Tool. If that doesn't work, and your data is all online, you can just delete the zotero.sqlite file (or move it somewhere temporarily for backup) with Zotero closed and then reopen Zotero and sync to pull down your library.