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我正在尝试按照这个React GraphQL TypeScript 教程编写代码

该项目使用 MikroOrm 与 PostgreSQL 数据库进行通信。我在我的 Ubuntu 18.04 上安装了 PostgreSQL(12.4)，创建了一个“postgres”用户，我可以登录该用户并正常运行psql。但是，当我开始使用（视频时间戳）之mikro-orm类的命令时，出现以下错误：npx mikro-orm migration:create

error: password authentication failed for user "postgres"
    at Parser.parseErrorMessage (/home/<username>/newstack/node_modules/pg-protocol/src/parser.ts:357:11)
    at Parser.handlePacket (/home/<username>/newstack/node_modules/pg-protocol/src/parser.ts:186:21)
    at Parser.parse (/home/<username>/newstack/node_modules/pg-protocol/src/parser.ts:101:30)
    at Socket.<anonymous> (/home/<username>/newstack/node_modules/pg-protocol/src/index.ts:7:48)
    at Socket.emit (events.js:315:20)
    at Socket.EventEmitter.emit (domain.js:483:12)
    at addChunk (_stream_readable.js:295:12)
    at readableAddChunk (_stream_readable.js:271:9)
    at Socket.Readable.push (_stream_readable.js:212:10)
    at TCP.onStreamRead (internal/stream_base_commons.js:186:23) {
  length: 104,
  severity: 'FATAL',
  code: '28P01',
  detail: undefined,
  hint: undefined,
  position: undefined,
  internalPosition: undefined,
  internalQuery: undefined, …