Callback url length exceeds its maximum size? about apps-script-oauth1 HOT 7 CLOSED

function fitbitTest() {
  var service = getFitbitService();
  if (service.hasAccess()) {
    var date = new Date();
    date.setDate(date.getDate() - 1);
    var dateStr = Utilities.formatDate(date, Session.getScriptTimeZone(), 'yyyy-MM-dd');
    var url = 'https://api.fitbit.com/1/user/-/activities/date/' + dateStr + '.json';
    var response = UrlFetchApp.fetch(url, {
      headers: {
        'Authorization': 'Bearer ' + service.getAccessToken()
      }
    });
    Logger.log(JSON.stringify(JSON.parse(response.getContentText()), null, 2));
  } else {
    var authUrl = service.getAuthorizationUrl();
    Logger.log('Visit this url: ' + authUrl);
  }
}

function getFitbitService() {
  var clientId = '...';
  var clientSecret = '...';
  return OAuth2.createService('fitbit')
      .setAuthorizationBaseUrl('https://www.fitbit.com/oauth2/authorize')
      .setTokenUrl('https://api.fitbit.com/oauth2/token')
      .setClientId(clientId)
      .setClientSecret(clientSecret)
      .setProjectKey('...')
      .setCallbackFunction('fitbitAuthCallback')
      .setPropertyStore(PropertiesService.getUserProperties())
      .setScope('activity')
      .setTokenHeaders({
        'Authorization': 'Basic ' + Utilities.base64Encode(clientId + ':' + clientSecret)
      });
}

function fitbitAuthCallback(request) {
  try {
    var service = getFitbitService();
    var authorized = service.handleCallback(request);
    if (authorized) {
      return HtmlService.createHtmlOutput('Success! You can close this tab.');
    } else {
      return HtmlService.createHtmlOutput('Denied. You can close this tab');
    }
  } catch (e) {
    return HtmlService.createHtmlOutput('Error: ' + e);
  }
}