[bug] Adding a font works, but causes code error after page refresh (F5)

[spartan-uyen]

Summary:
Fonts can be added successfully in the font panel. However, after refreshing the page with F5, a code error occurs, suggesting the font is not properly saved or causes issues during reinitialization.

Steps to reproduce:

1. Open the font panel.
2. Add a new font successfully.
3. Press F5 to refresh the page.

Actual result:
A code error is triggered after the page reloads.
https://github.com/user-attachments/assets/3f7f3a12-3a70-41f9-9442-c1fdeb6a29ce

Expected result:
The newly added font should persist and the page should load without errors after a refresh.