Hi, a client is running into this error when opening the visual editor:

An unknown error occurred. Please try again or contact support with the error code: 'Unable to verify sender origin

GB Dev Tools doesn't indicate anything. What might be the reason for this. It worked before when I set it up 2 weeks ago.

Is there a redirect happening? We verify that the URL they entered in GrowthBook matches the URL they are on when the visual editor loads.

Hmm, yes, it seems there is a 301 redirect. They tested the Growthbook URL redirect, but that experiment is off. I'll ask them if they have any other redirects implemented.

This check specifically is only looking at the origin. So a redirect from

<http://domain.com/a|domain.com/a>

to

<http://domain.com/b|domain.com/b>

will not trigger this error. But a redirect from

<http://domain.com/a|domain.com/a>

to

<http://otherdomain.com/a|otherdomain.com/a>

will. It could be as simple as the client entered

http://

instead of

https://

, and when the visual editor loaded the

http://

domain, it redirected to the secure version of the site on another origin

Yes, there was a redirect. Thank you for the quick support!