4:29 쯤에서 npm start가 안됩니다(자문자답)

index.js에 코드 복붙하고 npm start를 했는데

Cannot find module 'graphql' 이라는 에러 로그가 발생합니다.

--> `sudo npm i graphql` 명령어로 모듈 설치하여 해결했습니다.

ㅡㅡㅡㅡ에러 로그ㅡㅡㅡㅡ

internal/modules/cjs/loader.js:638

    throw err;

    ^

Error: Cannot find module 'graphql'

    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)

    at Function.Module._load (internal/modules/cjs/loader.js:562:25)

    at Module.require (internal/modules/cjs/loader.js:692:17)

    at require (internal/modules/cjs/helpers.js:25:18)

    at Object.<anonymous> (/home/kimhanui/workspace/yalco-inflearn-graphql-apollo/2-1-graphql-api-setup/node_modules/apollo-server-errors/dist/index.js:4:19)

    at Module._compile (internal/modules/cjs/loader.js:778:30)

    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)

    at Module.load (internal/modules/cjs/loader.js:653:32)

    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)

    at Function.Module._load (internal/modules/cjs/loader.js:585:3)

[nodemon] app crashed - waiting for file changes before starting...