인프런 커뮤니티 질문&답변

이렇게뜨는데.. 뭐가잘못된건가요?ㅠㅠ

 

> concurrently "npm run backend" "npm run start --prefix client"

 

[0] 

[0] > react-boiler-plate@1.0.0 backend

[0] > nodemon server/index.js

[0]

[1]

[1] > client@0.1.0 start

[1] > react-scripts start

[1]

[1] 

[1] There might be a problem with the project dependency tree.

[1] It is likely not a bug in Create React App, but something you need to fix locally.

[1]

[1] The react-scripts package provided by Create React App requires a dependency:

[1]

[1]   "babel-loader": "8.1.0"

[1]

[1] Don't try to install it manually: your package manager does it automatically.

[1] However, a different version of babel-loader was detected higher up in the tree:

[1]

[1]   C:\Users\82109\node_modules\babel-loader (version: 8.2.3)

[1]

[1] Manually installing incompatible versions is known to cause hard-to-debug issues.

[1]

[1] If you would prefer to ignore this check, add SKIP_PREFLIGHT_CHECK=true to an .env file in your project.

[1] That will permanently disable this message but you might encounter other issues.

[1]

[1] To fix the dependency tree, try following the steps below in the exact order:

[1]

[1]   1. Delete package-lock.json (not package.json!) and/or yarn.lock in your project folder.

[1]   2. Delete node_modules in your project folder.

[1]   3. Remove "babel-loader" from dependencies and/or devDependencies in the package.json file in your project folder.

[1]   4. Run npm install or yarn, depending on the package manager you use.

[1]

[1] In most cases, this should be enough to fix the problem.

[1] If this has not helped, there are a few other things you can try:

[1]

[1]   5. If you used npm, install yarn (http://yarnpkg.com/) and repeat the above steps with it instead.

[1]      This may help because npm has known issues with package hoisting which may get resolved in future versions.

[1]

[1]   6. Check if C:\Users\82109\node_modules\babel-loader is outside your project directory.

[1]      For example, you might have accidentally installed something in your home folder.

[1]

[1]   7. Try running npm ls babel-loader in your project folder.

[1]      This will tell you which other package (apart from the expected react-scripts) installed babel-loader.

[1]

[1] If nothing else helps, add SKIP_PREFLIGHT_CHECK=true to an .env file in your project.

[1] That would permanently disable this preflight check in case you want to proceed anyway.

[1]

[1] P.S. We know this message is long but please read the steps above :-) We hope you find them helpful!

[1]

[1] npm run start --prefix client exited with code 1

[0] [nodemon] 1.19.4

[0] [nodemon] to restart at any time, enter `rs`

[0] [nodemon] watching dir(s): *.*

[0] [nodemon] watching extensions: js,mjs,json

[0] [nodemon] starting `node server/index.js`

[0] node:internal/modules/cjs/loader:936

[0]   throw err;

[0]   ^

[0]

[0] Error: Cannot find module 'bcrypt'

[0] Require stack:

[0] - C:\Users\82109\Downloads\boilerplate-mern-stack-master\server\models\User.js

[0] - C:\Users\82109\Downloads\boilerplate-mern-stack-master\server\routes\users.js

[0] - C:\Users\82109\Downloads\boilerplate-mern-stack-master\server\index.js

[0]     at Function.Module._resolveFilename (node:internal/modules/cjs/loader:933:15)

[0]     at Function.Module._load (node:internal/modules/cjs/loader:778:27)

[0]     at Module.require (node:internal/modules/cjs/loader:1005:19)

[0]     at require (node:internal/modules/cjs/helpers:102:18)

[0]     at Object.<anonymous> (C:\Users\82109\Downloads\boilerplate-mern-stack-master\server\models\User.js:2:16)

[0]     at Module._compile (node:internal/modules/cjs/loader:1103:14)

[0]     at Object.Module._extensions..js (node:internal/modules/cjs/loader:1155:10)

[0]     at Module.load (node:internal/modules/cjs/loader:981:32)

[0]     at Function.Module._load (node:internal/modules/cjs/loader:822:12)

[0]     at Module.require (node:internal/modules/cjs/loader:1005:19)

[0]     at require (node:internal/modules/cjs/helpers:102:18)

[0]     at Object.<anonymous> (C:\Users\82109\Downloads\boilerplate-mern-stack-master\server\routes\users.js:3:18)

[0]     at Module._compile (node:internal/modules/cjs/loader:1103:14)

[0]     at Object.Module._extensions..js (node:internal/modules/cjs/loader:1155:10)

[0]     at Module.load (node:internal/modules/cjs/loader:981:32)

[0]     at Function.Module._load (node:internal/modules/cjs/loader:822:12) {

[0]   code: 'MODULE_NOT_FOUND',

[0]   requireStack: [

[0]     'C:\\Users\\82109\\Downloads\\boilerplate-mern-stack-master\\server\\models\\User.js',

[0]     'C:\\Users\\82109\\Downloads\\boilerplate-mern-stack-master\\server\\routes\\users.js',

[0]     'C:\\Users\\82109\\Downloads\\boilerplate-mern-stack-master\\server\\index.js'

[0]   ]

[0] }

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