Cannot read properties of undefined (reading 'write')

Question

I’m using the official Figma browser plugin which works great. But when I try to screenshot our local dev environment, I get this error.

It’s probably something in our local environment, but how can I debug this? When I deploy my local environment to production, it works flawless.

Would love to hear if other people have the same issue and if anybody knows a solution.

Sythe · Accepted Answer

I fixed it by changing .test to .localhost ;)

Jaycee Lewis · Answer

Hey hey ​@Sythe👋 Thanks for the greatdebugging question. I wonder if this a secure-context issue rather than anything wrong with your local build.Quick way to confirm:open DevTools on the failing tabrun thisin the console 👇window.isSecureContextIf it returns false, that's a useful clueQuestion – How are you serving your local environment? If it's http:// on something other than localhost, a few options:Access it via http://localhost or http://127.0.0.1 (both count as secure even over http)Serve local dev over HTTPS (mkcert makes this painless)If you're already on localhost and still hitting this, let me know we'll dig in. – Jaycee

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