Setting the Ion Token throws a 401 error with Invalid Credentials

[leeprobert]

I'm settting the Ion token in my app but when I do it throws a 401 error:

RequestErrorEvent {statusCode: 401, response: '{"code":"InvalidCredentials","message":"No authorization token was found"}', responseHeaders: {…}}

I'm setting the tokens for both Ion and GoogleMaps:

import { Ion, GoogleMaps } from 'cesium'
GoogleMaps.defaultApiKey = process.env.REACT_APP_GOOGLE_MAPS_API_KEY;
Ion.defaultAccessToken = process.env.REACT_APP_CESIUM_ION_TOKEN;

I only get the error when I set the tokens and API key for Google Maps. If I don't set the API key I get the error.

The message onscreen only complains about the Google Maps Key which suggests it has set the Ion token so the error could be thrown before it has set the token.