[racket] common handin error related to 'print-only-errors'?

I find that submitting code to my handin-server that contains the directive:

(print-only-errors #t)

…results in the response error

current-directory: `exists’ access denied for /home/clements/class/handin/

(error message retyped, apologies for typos).

It’s not clear to me why ‘print-only-errors’ should be calling ‘current-directory’—is there an easy workaround for this, other than telling students to comment this line out before handing it in?

John