Error mixing endpoints

Hello,
I would like to configure with tyk an API that is secured by JWT mechanism accessible after login.
An endpoint of this API is not protected.

In tyk dashboard, I have set authentication mechanism to JWT but now that I want to access the unprotected endpoint, I am getting:
{
“error”: “Authorization field missing”
}

My API is openApi v3 specs.

Any idea on how to handle this ?

Thanks a lot.