I'm fetching the Clash of Clans API, but when I try to api.json() it, there is an Fetch-error.

FetchError: invalid json response body at https://api.clashofclans.com/v1/players/#9JYPUVU2J reason: Unexpected end of JSON input.

code:

clashofclansApi = await fetch(`https://api.clashofclans.com/v1/players/#${encodeURIComponent(tag)}`, {
    method: `GET`,
    headers: ({
        'Authorization': `Bearer ${API_TOKEN}`,
    })
})
api = await clashofclansApi.json()