[ReactNative]Twitterでloginし、firebaseでuserを作りたい

TypeError: null is not an object (evaluating 'RNTwitterSignIn.init')

const { RNTwitterSignIn } = NativeModules;

  const onTwitterButtonPress = async () =>  {
      await RNTwitterSignIn.init(
        process.env.TWITTER_CONSUMER_KEY,
        process.env.TWITTER_CONSUMER_SECRET
      ).then(() => console.log("Twitter SDK initialized"));
    // Perform the login request
    const { oauthToken, oauthTokenSecret } = await RNTwitterSignIn.logIn();

    // Create a Twitter credential with the tokens
    const twitterCredential = auth.TwitterAuthProvider.credential(
      oauthToken,
      oauthTokenSecret
    );

    // Sign-in the user with the credential
    return auth().signInWithCredential(twitterCredential);
  }