Node.js - Error fetching access token when sending a firebase cloud message from a cloud function?

I am trying to send a message to an iOS device using cloud functions with the code below, but it generates the following error when I deploy it in the terminal using

firebase deploy --only functions

Error sending message: FirebaseAppError: Credential implementation provided to initializeApp() via the "credential" property failed to fetch a valid Google OAuth2 access token with the following error: "Error fetching access token: Error while making request: getaddrinfo ENOTFOUND metadata.google.internal. Error code: ENOTFOUND".

import * as admin from "firebase-admin";
import * as serviceAccount from "../../credentials/my-app-credentials.json";

admin.initializeApp({
  // credential: admin.credential.cert(serviceAccount),
  credential: admin.credential.cert(serviceAccount as admin.ServiceAccount),
});


const message: admin.messaging.Message = {
  notification: {
    title: "Test notification",
    body: "Sent from firebase cloud functions",
  },
  token: "<REDACTED>", 
};

admin.messaging().send(message)
  .then((response) => {
    console.log("Successfully sent message:", response);
  })
  .catch((error) => {
    console.error("Error sending message:", error);
  });

Other notes:

• I am on the blaze plan
• When using the Compose notification page in firebase with a test message it works and it get's delivered to the iOS device.
• I have set up a service account with a key
• Other functions that access my firebase database work
• I tried a few variations to do admin.initializeApp, but none of them worked
• I am new to working with cloud functions