AWS CloudWatch Winstion属性丢失

如何解决AWS CloudWatch Winstion属性丢失

我正在为服务器代码实现winston-aws-cloudwatch模块。使用此模块时有两个问题。
我设置了CloudWatch配置。我按照教程指南中的所有步骤进行操作。

new CloudWatchTransport({
      level: 'error',logGroupName: process.env.CLOUDWATCH_LOG_GROUP_NAME,logStreamName: process.env.CLOUDWATCH_LOG_STREAM_NAME,createLogGroup: true,createLogStream: true,awsConfig: {
        aws_access_key_id: process.env.AWS_KEY_I_USE_FOR_AWS,aws_secret_access_key: process.env.AWS_SECRET_KEY_I_USE_FOR_AWS,region: process.env.REGION_CLOUDWATCH_IS_IN
      },formatLog: item =>
      `${item.level}: ${item.message} ${JSON.stringify(item.meta)}`
})

但是我在Cloud Watch控制台上收到的日志是undefined: undefined {"0":"e","1":"r","2":"r","3":"o","4":"r"}。有谁知道为什么无法记录级别和消息。

问题2是我收到错误消息。

(node:88527) UnhandledPromiseRejectionWarning: TypeError: item.callback is not a function
at Relay._onSubmitted (/Users/manlokwong/Desktop/BeastQuestServer/bq_server/node_modules/winston-aws-cloudwatch/lib/relay.js:62:12)
at _client.submit.then (/Users/manlokwong/Desktop/BeastQuestServer/bq_server/node_modules/winston-aws-cloudwatch/lib/relay.js:53:24)
at process._tickCallback (internal/process/next_tick.js:178:7)

（节点：88527）UnhandledPromiseRejectionWarning：未处理的承诺拒绝。该错误是由于在没有catch块的情况下抛出异步函数而引起的，或者是由于拒绝了未经.catch（）处理的诺言而引起的。 （拒绝ID：5）

然后我附加了formatLog项目属性。

LogItem {
  _date: 1598927751612,_level: undefined,_message: undefined,_meta: { '0': 'e','1': 'r','2': 'r','3': 'o','4': 'r' },_callback: 'BatchError {\n    stat: { total: 1,succeeded: 0,failed: 1,duration: 0 }\n    errors: [\n        0: { Error: Insufficient gem\n            at tx.one.then.catch.err (/Users/manlokwong/Desktop/BeastQuestServer/bq_server/controllers/chest.js:305:39)\n            at process._tickCallback (internal/process/next_tick.js:178:7)\n          extraInfo: [],\n          httpCode: 400,\n          wsCode: 1013,\n          type: \'BAD_INPUT\',\n          subType: \'FAIL_VALIDATION\' }\n    ]\n}' }