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Live-collaboration is broken on excalidraw.com

See original GitHub issue

Hi! Thanks for this great software. Sadly, the live-collaboration feature seems broken at the moment due to CORS issues. When opening the developer console, I get the following errors:

Access to XMLHttpRequest at 'https://portal.excalidraw.com/socket.io/?EIO=3&transport=polling&t=XXX&sid=' from origin 'https://excalidraw.com' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: The value of the 'Access-Control-Allow-Origin' header in the response must not be the wildcard '*' when the request's credentials mode is 'include'. The credentials mode of requests initiated by the XMLHttpRequest is controlled by the withCredentials attribute.

trycatch.ts:281 POST https://portal.excalidraw.com/socket.io/?EIO=3&transport=polling&t=XXX&sid=XXX net::ERR_FAILED

I have observed these errors with both Firefox and Chromium.

Issue Analytics

State:
Created 3 years ago
Reactions:2
Comments:7 (4 by maintainers)

Top GitHub Comments

1reaction

dwellecommented, Jan 14, 2021

Good. Nevertheless, we’ll make some changes that should fix that error in the future.

1reaction

dwellecommented, Jan 14, 2021

I did. No errors. We’ve tried collaborating among several team members and had no issues either.

I’ve now noticed the error message you supplied mentions it’s related to credentials. Reading up on it, I wonder why it’s not reproducing for everyone, as well. I’ll see what we can do.

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