SAML Auth Stuck on Callback phase initiated

Hi All, I’m trying to set up the discourse-saml plugin on my MacOS Dev installation but I believe that something is being missed once I got stuck on (small) Callback phase initiated and nothing happens after that.

I can see this before getting stuck in the one mentioned above:

(saml) Setup endpoint detected, running now.
(saml) Request phase initiated
Created AuthnRequest
(saml) Setup endpoint detected, running now.

Does anybody get stuck on it as well?