Help with Lyx file- Missing packages

Dear Lyx Customer Service,

I am having trouble viewing and saving the attached file in PDF form. When I go to view the file in PDF I get an error message about missing packages. I looked online and saw that in Document>Settings>Latex preamble, but it says to contact you here and not edit the preamble.

Would you be able to look at the file and possibly tell me what I can do to fix the issue?

Thank you!

Kerry Bowman
Assistant to Professor John Geanakoplos
Yale University
203-804-6529

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