Hi @wes.gilmour,
Thanks for reaching out.
I will try to help here, so first, if the Prismic repository is private, then you have to add the access token to your code, and you can find the access token in your Prismic repository setting.
You can read more about setting up your access token here
Moreover, it would be helpful if you could share with us (in a private message if necessary) your repository name and a zip file of your project to try to run it for you if you couldn't find the source of the issue.
Looking forward to your reply,
Fares