Help: The content of unlinked reference cannot showed

Troubleshooting
1

I’m a new of emacs and org-roam, Is there anybody know how to show the content of unlinked reference? I tried many times but failed.

Screen Shot 2022-05-18 at 01.49.49
Screen Shot 2022-05-18 at 01.49.491101×956 91.2 KB

The environment:
emacs-mac(init.el created by myself)
ripgrep: brew install git ripgrep

This is my init.el:

;; -*- lexical-binding: t -*- 

(setq mac-option-modifier 'meta
      mac-command-modifier 'super)

(global-set-key (kbd "s-a") 'mark-whole-buffer)
(global-set-key (kbd "s-c") 'kill-ring-save)
(global-set-key (kbd "s-s") 'save-buffer)
(global-set-key (kbd "s-v") 'yank)
(global-set-key (kbd "s-z") 'undo)
(global-set-key (kbd "s-x") 'kill-region)

(global-linum-mode 1)

(setq inhibit-startup-screen t)

(setq tab-always-indent 'complete)
;; (icomplete-mode t)

(electric-pair-mode t)

;; (toggle-frame-maximized)

(tool-bar-mode -1)

(scroll-bar-mode -1)

(setq-default cursor-type 'bar)

(defun open-init-file()
  (interactive)
  (find-file "~/.emacs.d/init.el"))

(global-set-key (kbd "<f1>") 'open-init-file)

(global-set-key (kbd "C-h C-f") 'find-function)
(global-set-key (kbd "C-h C-v") 'find-variable)
(global-set-key (kbd "C-h C-k") 'find-function-on-key)


(require 'package)
(add-to-list 'package-archives '("gnu"   . "https://elpa.gnu.org/packages/"))
(add-to-list 'package-archives '("melpa" . "https://melpa.org/packages/"))
(package-initialize)


(when (not package-archive-contents)
  (package-refresh-contents))

(package-install 'vertico)
(vertico-mode t)

(package-install 'orderless)
(setq completion-styles '(orderless))

(package-install 'marginalia)
(marginalia-mode t)

(package-install 'embark)
(global-set-key (kbd "C-;") 'embark-act)
(setq prefix-help-command 'embark-prefix-help-command)

(package-install 'consult)
(global-set-key (kbd "C-s") 'consult-line)
(global-set-key (kbd "M-s i") 'consult-imenu)

(setq make-backup-files nil)

(require 'recentf)
(recentf-mode 1)
(setq recentf-max-menu-items 10)

(global-set-key (kbd "C-x b") 'consult-buffer)

(delete-selection-mode 1)

(use-package org-roam
  :ensure t
  :custom
  (org-roam-directory (file-truename "/Users/leviwang/Library/Mobile Documents/com~apple~CloudDocs/Org-roam"))
  :bind (("C-c n l" . org-roam-buffer-toggle)
         ("C-c n f" . org-roam-node-find)
         ("C-c n g" . org-roam-graph)
         ("C-c n i" . org-roam-node-insert)
         ("C-c n c" . org-roam-capture)
         ;; Dailies
         ("C-c n j" . org-roam-dailies-capture-today))
  :config
  ;; If you're using a vertical completion framework, you might want a more informative completion interface
  (setq org-roam-node-display-template (concat "${title:*} " (propertize "${tags:10}" 'face 'org-tag)))
  (org-roam-db-autosync-mode)
  ;; If using org-roam-protocol
  (require 'org-roam-protocol))

(setq org-roam-mode-sections
      (list #'org-roam-backlinks-section
            #'org-roam-reflinks-section
            #'org-roam-unlinked-references-section
            ))

(custom-set-variables
 ;; custom-set-variables was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 '(package-selected-packages
   '(use-package org-roam consult embark marginalia orderless vertico company)))
(custom-set-faces
 ;; custom-set-faces was added by Custom.
 ;; If you edit it by hand, you could mess it up, so be careful.
 ;; Your init file should contain only one such instance.
 ;; If there is more than one, they won't work right.
 )