window.google undefined in the deployed environment on Netlify

[Lada496]

I found window.google is undefined, and useGoogleLogin did not work properly when I deployed my project on Netlify, though it works fine in the local environment.
Is there any specific setting I need to add? Thanks!

Key Environment

• @react-oauth/google: v0.12.1
• react: v18.3.1
• vite: v5.4.10

Here is the whole code: https://github.com/Lada496/walk-your-dog/tree/with-react-auth/google.