CORS error setting up EXB 1.16

[Gurunara]

Getting:

started client and server on local. and browing to https://fqdn.com:3001.

i have added the https://fqdn.com:3001 without the trailing backslash to the portal's allowed origins list.

is there an additional step needed?

[JeffreyThompson2]

https://developers.arcgis.com/experience-builder/guide/install-guide/

As per step 7 of the Installation Guide, your Redirect URL requires https://localhost:3001/

localhost is what your computer calls itself. When building a project in Experience Builder, your computer will be functioning as a server to itself.