I'm a first time emacs user, literally just downloaded it today via [https://emacsformacosx.com](https://emacsformacosx.com). Anyways, I am trying to create and run racket files with the editor and racket-mode.
I've done everything from these two links below:
[https://www.racket-mode.com](https://www.racket-mode.com)
[https://www.linw1995.com/en/blog/Write-Racket-With-Emacs/](https://www.linw1995.com/en/blog/Write-Racket-With-Emacs/)
​
The problem that I am getting is that when I m-x and "racket-run", I get the following error: "Wrong type argument: string, nil".
​
Here is my ".emacs" config file that I created:
(require 'package)
(add-to-list 'package-archives
'("melpa" . "https://melpa.org/packages/")
t)
;;; Package manager
;; Bootstrapping straight.el
(defvar bootstrap-version)
(let ((bootstrap-file
(expand-file-name "straight/repos/straight.el/bootstrap.el" user-emacs-directory))
(bootstrap-version 5))
(unless (file-exists-p bootstrap-file)
(with-current-buffer
(url-retrieve-synchronously
"https://raw.githubusercontent.com/raxod502/straight.el/develop/install.el"
'silent 'inhibit-cookies)
(goto-char (point-max))
(eval-print-last-sexp)))
(load bootstrap-file nil 'nomessage))
;; Integration with use-package
(straight-use-package 'use-package)
;;; Theme Config
(use-package doom-themes
:straight t
:config
;; Global settings (defaults)
(setq doom-themes-enable-bold t ; if nil, bold is universally disabled
doom-themes-enable-italic t) ; if nil, italics is universally disabled
(load-theme 'doom-one-light t)
;; Enable flashing mode-line on errors
(doom-themes-visual-bell-config)
;; Enable custom neotree theme (all-the-icons must be installed!)
(doom-themes-neotree-config)
;; or for treemacs users
(setq doom-themes-treemacs-theme "doom-colors") ; use the colorful treemacs theme
(doom-themes-treemacs-config)
;; Corrects (and improves) org-mode's native fontification.
(doom-themes-org-config))
;;; Dashboard
(use-package dashboard
:straight t
:config
(dashboard-setup-startup-hook))
(use-package racket-mode
:straight t
:hook (racket-mode . racket-xp-mode))
;;; GUI Config
(when (eq system-type 'darwin)
;; Make the title bar and toolbar to be transparent.
(add-to-list 'default-frame-alist
'(ns-transparent-titlebar . t))
(add-to-list 'default-frame-alist
'(ns-appearance . dark))
;; Change the opacity of the frame.
(add-to-list 'default-frame-alist
'(alpha . (80 . 75))))
;; Disable dialog box
(setq use-file-dialog nil
use-dialog-box nil)
;; Hide toolbar
(when (fboundp 'tool-bar-mode)
(tool-bar-mode -1))
;; Hide scrollbar
(when (fboundp 'set-scroll-bar-mode)
(set-scroll-bar-mode nil))
(setq racket-program (executable-find "Racket"))
;;; Shell Configure
;; Ensure environment variables inside Emacs
;; look the same as in the user's shell.
(use-package exec-path-from-shell
:straight t
:if (memq window-system '(mac ns))
:config
(exec-path-from-shell-initialize))