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Hey @haiweiweiwei ,
I’ve switched your topic to "Ask the community’ as it looks like you encounter an issue.

In most cases when you see this error, it’s because there’s a network proxy or other network security app blocking some level of access. To clear this issue you’ll need to ask your IT services team or network admins to add Figma.com to any ‘safe lists’ and unblock Port 443 and enable WASM as needed.

You can also find these requirements in Technical troubleshooting tips, Figma browser requirements and Configure your browser for Figma.

If this doesn’t help, please try to restart the app or browser app, work in an alternate supported browser (Chrome, Firefox, Safari, Edge), restart your computer and router or modem and check if this clears the issue.
Hope this will fix your issue!