Meanwhile I’m pretty sure that there is some relation to the items database in the background.
I can reproduce this error by calling the list of all items in the REST API.
The error message occours on my system everytime an external software (e.g. VSCode) tries to get the list of items.
In my system there seem to be some “ghost items” that are no part of myitems.items. Even if this file is empty there remain some items from “Nowhere?”.
Don’t know how to delete this corrupt items at the moment from the database.
Maybe someone can help me with this?
I gathered my known information here: Paper UI stays empty / IO Error