it seems there's a linked file named "documents"? what kind of file is that? if the linked file is not supposed to be there, try removing it.
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"Documents plugin" - can you give us more information as I am not familiar with a document plugin for AI. Do you need this for what you are doing, rather than just copying and pasting text? If you are using a lot of text, InDesign would be the better software. Please give us more information so we can offer more help.
When you say "MY documents plugin" do you mean a plugin that you created?
If so I'd suggest it's not correctly constructed for illustrator to read it.
If it's a file, I would suggest you add the file type suffix - .pdf, .ai etc...