IssueTracker

Description

I have a NodeJS app that among doing other things sends emails using the Gmail api with simple pdf attachments. This worked for months and then suddenly it stopped working and I started getting 500 code errors (below). I had changed neither the code nor the account details. Furthermore, it works perfectly fine without an attachment, and the exact same code works perfectly fine with another email address with or without attachments. I have some excerpts of code below that I have tried running.

Code

This file generates an auth token:

const fs = require("fs").promises;
const path = require("path");
// const process = require("process");
const { authenticate } = require("@google-cloud/local-auth");
const { google } = require("googleapis");
// If modifying these scopes, delete token.json.

const SCOPES = ["https://www.googleapis.com/auth/calendar.events","https://www.googleapis.com/auth/gmail.send", "https://www.googleapis.com/auth/drive.readonly"];
// The file token.json stores the user's access and refresh tokens, and is
// created automatically when the authorization flow completes for the first
// time.
const TOKEN_PATH = path.join(process.cwd(), "./token.json");
const CREDENTIALS_PATH = path.join(process.cwd(), "./OAuthClient.json");

/**
 * Reads previously authorized credentials from the save file.
 *
 * @return {Promise<OAuth2Client|null>}
 */
async function loadSavedCredentialsIfExist() {
    try {
        const content = await fs.readFile(TOKEN_PATH);
        const credentials = JSON.parse(content);
        return google.auth.fromJSON(credentials);
    } catch (err) {
        return null;
    }
}
/**
 * Serializes credentials to a file compatible with GoogleAuth.fromJSON.
 *
 * @param {OAuth2Client} client
 * @return {Promise<void>}
 */
async function saveCredentials(client) {
    const content = await fs.readFile(CREDENTIALS_PATH);
    const keys = JSON.parse(content);
    const key = keys.installed || keys.web;
    const payload = JSON.stringify({
        type: "authorized_user",
        client_id: key.client_id,
        client_secret: key.client_secret,
        refresh_token: client.credentials.refresh_token,
    });
    await fs.writeFile(TOKEN_PATH, payload);
}
/**
 * Load or request or authorization to call APIs.
 */
async function authorize() {
    let client = await loadSavedCredentialsIfExist();
    if (client) {
        return client;
    }
    client = await authenticate({
        scopes: SCOPES,
        keyfilePath: CREDENTIALS_PATH,
    });
    if (client.credentials) {
        await saveCredentials(client);
    }
    return client;
}

authorize();

This file has the functionality for sending:

const credentials = require("./OAuthClient.json");
const tokens = require("./token.json");

const getGmailService = () => {
    const { client_secret, client_id, redirect_uris } = credentials.installed;
    const oAuth2Client = new google.auth.OAuth2(client_id, client_secret, redirect_uris[0]);
    oAuth2Client.setCredentials(tokens);
    const gmail = google.gmail({ version: "v1", auth: oAuth2Client });
    return gmail;
};

const createMail = async (options) => {
    const mailComposer = new MailComposer(options);
    const message = await mailComposer.compile().build();
    return Buffer.from(message).toString("base64").replace(/\+/g, "-").replace(/\//g, "_").replace(/=+$/, "");
};

exports.sendMail = async (options) => {
    const gmail = getGmailService();
    const rawMessage = await createMail(options);
    const data = await gmail.users.messages.send({
        userId: "me",
        resource: {
            raw: rawMessage,
        },
    });
    console.log(data);
    return data;
};

exports.emailOptions = {
    to: "",
    cc: "",
    replyTo: "me@example.com",
    subject: "",
    text: "",
    html: "",
    // attachments: fileAttachments,
    headers: [
        { key: "X-Application-Developer", value: "Bailey Tuckman" },
        { key: "X-Application-Version", value: "v1.0.0" },
    ],
};

and finally to send:

const { sendMail, emailOptions } = require("./main");

let messageOptions = emailOptions;
messageOptions.to = "me@example.com";
messageOptions.subject = `Test`;

messageOptions.textEncoding = "base64"
messageOptions.attachments = {

    filename: "text2.txt",
    content: "aGVsbG8gd29ybGQh",
    encoding: "utf8",
};

let messageId = sendMail(messageOptions).then((res) => {
    console.log(res);
});

Output

   throw new common_1.GaxiosError(`Request failed with status code ${translatedResponse.status}`, opts, translatedResponse);
                      ^

GaxiosError: Internal error encountered.
    at Gaxios._request (/Users/baileytuckman/Desktop/Code/GmailTest/node_modules/gaxios/build/src/gaxios.js:142:23)
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async OAuth2Client.requestAsync (/Users/baileytuckman/Desktop/Code/GmailTest/node_modules/google-auth-library/build/src/auth/oauth2client.js:429:18)
    at async exports.sendMail (/Users/baileytuckman/Desktop/Code/GmailTest/main.js:25:15) {
  config: {
    url: 'https://gmail.googleapis.com/gmail/v1/users/me/messages/send',
    method: 'POST',
    apiVersion: '',
    userAgentDirectives: [
      {
        product: 'google-api-nodejs-client',
        version: '7.2.0',
        comment: 'gzip'
      }
    ],
    paramsSerializer: [Function (anonymous)],
    data: {
      raw: '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'
    },
    headers: {
      'x-goog-api-client': 'gdcl/7.2.0 gl-node/20.12.0',
      'Accept-Encoding': 'gzip',
      'User-Agent': 'google-api-nodejs-client/7.2.0 (gzip)',
      Authorization: '<<REDACTED> - See `errorRedactor` option in `gaxios` for configuration>.',
      'Content-Type': 'application/json'
    },
    params: {},
    validateStatus: [Function (anonymous)],
    retry: true,
    body: '{"raw":"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"}',
    responseType: 'unknown',
    errorRedactor: [Function: defaultErrorRedactor],
    retryConfig: {
      currentRetryAttempt: 0,
      retry: 3,
      httpMethodsToRetry: [ 'GET', 'HEAD', 'PUT', 'OPTIONS', 'DELETE' ],
      noResponseRetries: 2,
      retryDelayMultiplier: 2,
      timeOfFirstRequest: 1738867607149,
      totalTimeout: 9007199254740991,
      maxRetryDelay: 9007199254740991,
      statusCodesToRetry: [ [ 100, 199 ], [ 408, 408 ], [ 429, 429 ], [ 500, 599 ] ]
    }
  },
  response: {
    config: {
      url: 'https://gmail.googleapis.com/gmail/v1/users/me/messages/send',
      method: 'POST',
      apiVersion: '',
      userAgentDirectives: [
        {
          product: 'google-api-nodejs-client',
          version: '7.2.0',
          comment: 'gzip'
        }
      ],
      paramsSerializer: [Function (anonymous)],
      data: {
        raw: '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'
      },
      headers: {
        'x-goog-api-client': 'gdcl/7.2.0 gl-node/20.12.0',
        'Accept-Encoding': 'gzip',
        'User-Agent': 'google-api-nodejs-client/7.2.0 (gzip)',
        Authorization: '<<REDACTED> - See `errorRedactor` option in `gaxios` for configuration>.',
        'Content-Type': 'application/json'
      },
      params: {},
      validateStatus: [Function (anonymous)],
      retry: true,
      body: '{"raw":"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"}',
      responseType: 'unknown',
      errorRedactor: [Function: defaultErrorRedactor]
    },
    data: {
      error: {
        code: 500,
        message: 'Internal error encountered.',
        errors: [
          {
            message: 'Internal error encountered.',
            domain: 'global',
            reason: 'backendError'
          }
        ],
        status: 'INTERNAL'
      }
    },
    headers: {
      'alt-svc': 'h3=":443"; ma=2592000,h3-29=":443"; ma=2592000',
      'content-encoding': 'gzip',
      'content-type': 'application/json; charset=UTF-8',
      date: 'Thu, 06 Feb 2025 18:46:47 GMT',
      server: 'ESF',
      'transfer-encoding': 'chunked',
      vary: 'Origin, X-Origin, Referer',
      'x-content-type-options': 'nosniff',
      'x-frame-options': 'SAMEORIGIN',
      'x-xss-protection': '0'
    },
    status: 500,
    statusText: 'Internal Server Error',
    request: {
      responseURL: 'https://gmail.googleapis.com/gmail/v1/users/me/messages/send'
    }
  },
  error: undefined,
  status: 500,
  code: 500,
  errors: [
    {
      message: 'Internal error encountered.',
      domain: 'global',
      reason: 'backendError'
    }
  ],
  [Symbol(gaxios-gaxios-error)]: '6.7.1'
}

Node.js v20.12.0

Steps

• If I run the code with the original account I was using I get the above error. If I don't include an attachment, it works fine. If I use a different account it works fine even with an attachment.