(defparameter *content* (cl-json:decode-json-from-string (dex:get "https://www.sec.gov/files/company_tickers.json" :headers '(("User-Agent" . "example@example.example"))))) (defun companies () (str:to-file "~/tmp/file.nfo" *content*)) The value (:|0| (:CIK--STR . 789019) (:TICKER . "MSFT") (:TITLE . "MICROSOFT CORP")) is not of type CHARACTER [Condition of type TYPE-ERROR] Restarts: 0: [RETRY] Retry SLIME REPL evaluation request. 1: [*ABORT] Return to SLIME's top level. 2: [ABORT] abort thread (#)