在 Heroku 上部署 React/Flask 應用程序：npm 錯誤！ 代碼ENOENT

Question

我有一個帶有反應前端和 python flask 后端的應用程序。 我正在嘗試將我的項目部署到 heroku。 我已按照本教程進行操作。 但是當我嘗試將我的項目推送到 master 時，我不斷收到此錯誤：

-----> Node.js app detected
       
-----> Creating runtime environment
       
       NPM_CONFIG_LOGLEVEL=error
       NODE_ENV=production
       NODE_MODULES_CACHE=true
       NODE_VERBOSE=false
       
-----> Installing binaries
       engines.node (package.json):  unspecified
       engines.npm (package.json):   unspecified (use default)
       
       Resolving node version 12.x...
       Downloading and installing node 12.18.2...
       Using default npm version: 6.14.5
       
-----> Installing dependencies
       Prebuild detected (node_modules already exists)
       Rebuilding any native modules
       npm ERR! code ENOENT
       npm ERR! syscall chmod
       npm ERR! path /tmp/build_0912bba7c20dc3b2b0f5ffd13fe70109/node_modules/semver/bin/semver.js
       npm ERR! errno -2
       npm ERR! enoent ENOENT: no such file or directory, chmod '/tmp/build_0912bba7c20dc3b2b0f5ffd13fe70109/node_modules/semver/bin/semver.js'
       npm ERR! enoent This is related to npm not being able to find a file.
       npm ERR! enoent 
       
       npm ERR! A complete log of this run can be found in:
       npm ERR!     /tmp/npmcache.WnwYf/_logs/2020-07-14T16_30_34_532Z-debug.log
-----> Build failed
       
       We're sorry this build is failing! You can troubleshoot common issues here:
       https://devcenter.heroku.com/articles/troubleshooting-node-deploys
       
       Some possible problems:
       
       - node_modules checked into source control
         https://blog.heroku.com/node-habits-2016#9-only-git-the-important-bits
       
       - Node version not specified in package.json
         https://devcenter.heroku.com/articles/nodejs-support#specifying-a-node-js-version
       
       Love,
       Heroku
       
 !     Push rejected, failed to compile Node.js app.
 !     Push failed

我已經嘗試了這 2 個建議，但它並沒有改變任何東西。

僅供參考， .gitignore看起來像這樣：

# dependencies
/node_modules
/.pnp
.pnp.js
env

# testing
/coverage

# misc
.DS_Store
.env.local
.env.development.local
.env.test.local
.env.production.local
__pycache__
node_modules

npm-debug.log*
yarn-debug.log*
yarn-error.log*

和package.json看起來像這樣：

{
  "name": "app",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@material-ui/core": "^4.10.0",
    "@material-ui/icons": "^4.9.1",
    "@testing-library/jest-dom": "^4.2.4",
    "@testing-library/react": "^9.5.0",
    "@testing-library/user-event": "^7.2.1",
    "material-design-icons": "^3.0.1",
    "node-sass": "^4.14.1",
    "react": "^16.13.1",
    "react-dom": "^16.13.1",
    "react-router-dom": "^5.2.0",
    "react-scripts": "3.4.1",
    "react-stopwatch": "^2.0.4",
    "symbols": "0.0.6"
  },
  "scripts": {
    "start": "react-scripts start",
    "start-api": "cd api && python app.py",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  },
  "proxy": "http://localhost:5000",
  "engines": {
    "node": "14.x",
    "npm": "6.x"
  }
}

感謝您的任何幫助！

Answer 1

我有一個帶有反應前端和 python flask 后端的應用程序。 我正在嘗試將我的項目部署到 heroku。 我已按照本教程進行操作。 但是當我嘗試將我的項目推送到 master 時，我不斷收到此錯誤：

-----> Node.js app detected
       
-----> Creating runtime environment
       
       NPM_CONFIG_LOGLEVEL=error
       NODE_ENV=production
       NODE_MODULES_CACHE=true
       NODE_VERBOSE=false
       
-----> Installing binaries
       engines.node (package.json):  unspecified
       engines.npm (package.json):   unspecified (use default)
       
       Resolving node version 12.x...
       Downloading and installing node 12.18.2...
       Using default npm version: 6.14.5
       
-----> Installing dependencies
       Prebuild detected (node_modules already exists)
       Rebuilding any native modules
       npm ERR! code ENOENT
       npm ERR! syscall chmod
       npm ERR! path /tmp/build_0912bba7c20dc3b2b0f5ffd13fe70109/node_modules/semver/bin/semver.js
       npm ERR! errno -2
       npm ERR! enoent ENOENT: no such file or directory, chmod '/tmp/build_0912bba7c20dc3b2b0f5ffd13fe70109/node_modules/semver/bin/semver.js'
       npm ERR! enoent This is related to npm not being able to find a file.
       npm ERR! enoent 
       
       npm ERR! A complete log of this run can be found in:
       npm ERR!     /tmp/npmcache.WnwYf/_logs/2020-07-14T16_30_34_532Z-debug.log
-----> Build failed
       
       We're sorry this build is failing! You can troubleshoot common issues here:
       https://devcenter.heroku.com/articles/troubleshooting-node-deploys
       
       Some possible problems:
       
       - node_modules checked into source control
         https://blog.heroku.com/node-habits-2016#9-only-git-the-important-bits
       
       - Node version not specified in package.json
         https://devcenter.heroku.com/articles/nodejs-support#specifying-a-node-js-version
       
       Love,
       Heroku
       
 !     Push rejected, failed to compile Node.js app.
 !     Push failed

我已經嘗試了這 2 個建議，但它並沒有改變任何東西。

僅供參考， .gitignore看起來像這樣：

# dependencies
/node_modules
/.pnp
.pnp.js
env

# testing
/coverage

# misc
.DS_Store
.env.local
.env.development.local
.env.test.local
.env.production.local
__pycache__
node_modules

npm-debug.log*
yarn-debug.log*
yarn-error.log*

和package.json看起來像這樣：

{
  "name": "app",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@material-ui/core": "^4.10.0",
    "@material-ui/icons": "^4.9.1",
    "@testing-library/jest-dom": "^4.2.4",
    "@testing-library/react": "^9.5.0",
    "@testing-library/user-event": "^7.2.1",
    "material-design-icons": "^3.0.1",
    "node-sass": "^4.14.1",
    "react": "^16.13.1",
    "react-dom": "^16.13.1",
    "react-router-dom": "^5.2.0",
    "react-scripts": "3.4.1",
    "react-stopwatch": "^2.0.4",
    "symbols": "0.0.6"
  },
  "scripts": {
    "start": "react-scripts start",
    "start-api": "cd api && python app.py",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  },
  "proxy": "http://localhost:5000",
  "engines": {
    "node": "14.x",
    "npm": "6.x"
  }
}

感謝您的任何幫助！