Help with auth - 'Request failed' Error on auth.signIn() from VSCode

// credentials object is an object containing the access_token, refresh_token created from the URL Fragment

// trying do a signIn
const data = await supabaseClient.auth.signIn({
            refreshToken: credentials.refresh_token,
})

{
    "user": null,
    "session": null,
    "error": {
        "message": "Request Failed"
    }
}