Sveltekit auth helper example error

https://github.com/supabase/auth-helpers/tree/main/examples/sveltekit-email-password
I am attempting to run this example. When signing up I am getting some json errors:
Unexpected token I in JSON at position 0
GitHub
A collection of framework specific Auth utilities for working with Supabase. - auth-helpers/examples/sveltekit-email-password at main · supabase/auth-helpers
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