'azure-ad-jw'未验证Node.js中的JWT令牌

Question

我想在Node.js中验证由Azure AD发出的JWT令牌。 我遇到了这个NPM软件包（ https://www.npmjs.com/package/azure-ad-jwt ）。 该网站提供的示例代码为：

var aad     = require('azure-ad-jwt');

var jwtToken = 'eyJ0eXAiOiJKV1QiLCJhbGciOiJSUzI1NiIsImtpZCI6IjFMVE16YWtpaGlSbGFfOHoyQkVKVlhlV01xbyJ9.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.1AFWW-Ck5nROwSlltm7GzZvDwUkqvhSQpm55TQsmVo9Y59cLhRXpvB8n-55HCr9Z6G_31_UbeUkoz612I2j_Sm9FFShSDDjoaLQr54CreGIJvjtmS3EkK9a7SJBbcpL1MpUtlfygow39tFjY7EVNW9plWUvRrTgVk7lYLprvfzw-CIqw3gHC-T7IK_m_xkr08INERBtaecwhTeN4chPC4W3jdmw_lIxzC48YoQ0dB1L9-ImX98Egypfrlbm0IBL5spFzL6JDZIRRJOu8vecJvj1mq-IUhGt0MacxX8jdxYLP-KUu2d9MbNKpCKJuZ7p8gwTL5B7NlUdh_dmSviPWrw';

aad.verify(jwtToken, null, function(err, result) {
    if (result) {
        console.log("JWT is valid");
    } else {
        console.log("JWT is invalid: " + err);
    }
});

该代码中提供的JWT令牌（V2.0）可从以下网站获得：https://docs.microsoft.com/zh-cn/azure/active-directory/develop/id-tokens#validating-tokens

当我执行以上代码时，我总是得到JWT是无效消息。 如果代码中有任何错误，我不知道该写什么。 谁能帮助我了解我为什么会收到此错误？