Twitch developer rig secret key not accepted

When I try to open my twitch extension in the developer rig after opening the projects json file it tells me the secret key is invalid despite me copying it from the page opened up by clicking “Retrieve your Extension Secret”. image
Please let me know what other information would be helpful, not sure what to say. The project is owned by an organization of which I am a member.

Make sure you are using the “Extension Client Secret” and not the “Twitch API Client Secret”

Since they are base64 decode you’ll find it generally ends in a =

So make sure you also copy/paste the WHOLE thing