need help with a fetch code error that wix is giving me.

please check out my code and the error code and tell me what i need to fix,
here is the error code: : "Your Authorization header uses an unsupported scheme "bearerauthorization:". You should use Bearer auth and set your Authorization header to something like ‘Authorization: Bearer YOUR_SECRET_KEY’

check out the example here . I think you might simply miss a space after the word “Bearer”.

Stripe Payment Processing

Integrate the Stripe Payment processing system into a site. Three levels of user access are demonstrated: visitor, freemium (registered), and premium (paid).