运行简单的开发命令后出现 pg 错误

Question

我有一个非常简单的 typeorm，pg 设置，脚本只是yarn dev。我以某种方式收到此错误。

AssertionError [ERR_ASSERTION]: unknown message code: 4a
    at Parser.handlePacket (/Users/dmitriyshin.io/Desktop/Web/React/1. Courses Projects/Uber Clone with TypeScript, Apollo, GraphQL and NodeJS/nuber-server/node_modules/pg-protocol/src/parser.ts:198:16)
    at Parser.parse (/Users/dmitriyshin.io/Desktop/Web/React/1. Courses Projects/Uber Clone with TypeScript, Apollo, GraphQL and NodeJS/nuber-server/node_modules/pg-protocol/src/parser.ts:101:30)
    at Socket.<anonymous> (/Users/dmitriyshin.io/Desktop/Web/React/1. Courses Projects/Uber Clone with TypeScript, Apollo, GraphQL and NodeJS/nuber-server/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)
[nodemon] app crashed - waiting for file changes before starting...

Answer 1

该问题是由于 postgres 的连接问题造成的（连接器报告不适当的消息）。

解决方案：检查您的 postgres 安装及其是否正在运行