Hola, estoy usando Firebase con mi proyecto PHP con javascript. Recibo este error cuando intento recuperar el token del dispositivo FCM:

 An error occurred while retrieving token. DOMException: Failed to execute 'atob' on 'Window': The string to be decoded is not correctly encoded. at https://www.gstatic.com/firebasejs/8.1.0/firebase-messaging.js:1:25342 at https://www.gstatic.com/firebasejs/8.1.0/firebase-messaging.js:1:25426 at https://www.gstatic.com/firebasejs/8.1.0/firebase-messaging.js:1:1982 at Object.next (https://www.gstatic.com/firebasejs/8.1.0/firebase-messaging.js:1:2087) at r (https://www.gstatic.com/firebasejs/8.1.0/firebase-messaging.js:1:833)

Aquí está mi código:

 <script type="module"> import "https://www.gstatic.com/firebasejs/8.1.0/firebase-app.js"; import "https://www.gstatic.com/firebasejs/8.1.0/firebase-messaging.js"; const firebaseConfig = { apiKey: "************", authDomain: "*************", databaseURL: "***********", projectId: "*****bdb20", storageBucket: "*********com", messagingSenderId: "***************", appId: "**************", measurementId: "G-7HS1PXRZMR" }; // Initialize Firebase firebase.initializeApp(firebaseConfig); const messaging = firebase.messaging(); messaging.usePublicVapidKey('**********SjpDQfr4gm6NvOmUvH2UoPCqxthqY'); messaging.getToken().then((currentToken) => { if (currentToken) { console.log(currentToken); } else { // Show permission request UI console.log('No registration token available. Request permission to generate one.'); // ... } }).catch((err) => { console.log('An error occurred while retrieving token. ', err); // ... });

¿Alguien puede resolver esto?