truffle deploy --network klaytn 미응답

truffle.js 터미널에서 (소스코드는 강의 소스 복사 붙여넣기)

truffle deploy --network klaytn

를 입력하였는데, 터미널에서 아무런 응답도 나오지 않고 바로 다음으로 넘어갑니다.

C:\Users\kyle8\addition-game-starter>truffle deploy --network klaytn

Error: Cannot find module 'connect-privkey-to-provider'

Require stack:

- C:\Users\kyle8\addition-game-starter\truffle-config.js

- C:\Users\kyle8\AppData\Roaming\npm\node_modules\truffle\node_modules\original-require\index.js

- C:\Users\kyle8\AppData\Roaming\npm\node_modules\truffle\build\cli.bundled.js

    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:902:15)

    at Function.Module._load (internal/modules/cjs/loader.js:746:27)

    at Module.require (internal/modules/cjs/loader.js:974:19)

    at require (internal/modules/cjs/helpers.js:93:18)

    at Object.<anonymous> (C:\Users\kyle8\addition-game-starter\truffle-config.js:1:29)

    at Module._compile (internal/modules/cjs/loader.js:1085:14)

    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)

    at Module.load (internal/modules/cjs/loader.js:950:32)

    at Function.Module._load (internal/modules/cjs/loader.js:790:12)

    at Module.require (internal/modules/cjs/loader.js:974:19)

    at require (internal/modules/cjs/helpers.js:93:18)

    at Function.Config.load (C:\Users\kyle8\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\truffle-config\index.js:254:1)

    at Function.Config.detect (C:\Users\kyle8\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\truffle-config\index.js:243:1)

    at Object.run (C:\Users\kyle8\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\truffle-core\lib\commands\migrate.js:35:1)

    at Command.run (C:\Users\kyle8\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\truffle-core\lib\command.js:101:1)

    at Object.<anonymous> (C:\Users\kyle8\AppData\Roaming\npm\node_modules\truffle\build\webpack:\packages\truffle-core\cli.js:22:1)

    at __webpack_require__ (C:\Users\kyle8\AppData\Roaming\npm\node_modules\truffle\build\webpack:\webpack\bootstrap 0791995565e53f633c90:19:1)

    at C:\Users\kyle8\AppData\Roaming\npm\node_modules\truffle\build\webpack:\webpack\bootstrap 0791995565e53f633c90:65:1

    at Object.<anonymous> (C:\Users\kyle8\AppData\Roaming\npm\node_modules\truffle\build\cli.bundled.js:71:10)

    at Module._compile (internal/modules/cjs/loader.js:1085:14)

    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1114:10)

    at Module.load (internal/modules/cjs/loader.js:950:32)

C:\Users\kyle8\addition-game-starter>

이런 에러가 지속적으로 나오네요.. ㅠ