问使用EWS托管api Nodejs实现从自定义文件夹读取MS-Exchange电子邮件

EN

const EWS = require('node-ews');
const ewsConfig = {
    username: '<Email>',
    password: '<Password>',
    host: '<Exchange URL>'
};
const ews = new EWS(ewsConfig);
const ewsFunction = 'FindItem';
var ewsArgs = {
    'attributes': {
        'Traversal': 'Shallow'
    },
    'ItemShape': {
        't:BaseShape': 'IdOnly',
        't:AdditionalProperties': {
            't:FieldURI': {
                'attributes': {
                    'FieldURI': 'item:Subject'
                }
            }
        }
    },
    'ParentFolderIds': {
        'DistinguishedFolderId': {
            'attributes': {
                'Id': '<Some Custom Folder>'
            }
        }
    }
};

(async function () {
   
    try {
        let result = await ews.run(ewsFunction, ewsArgs);
        console.log(result);
    } catch (err) {
        console.log(err.message);
    }
})();

a:ErrorInvalidRequest: The request is invalid.: {"ResponseCode":"ErrorInvalidRequest","Message":"The request is invalid."}