title: npm wont start a react app, requires a dependency: "webpack-dev-server": "3.1.14"
body: <p>I am trying to create a new react-app and start it, I have created react apps before with no errors but this time when i npm start i get this error</p>
  
  <pre><code> There might be a problem with the project dependency tree.
   It is likely not a bug in Create React App, but something you need to fix 
   locally.
  
   The react-scripts package provided by Create React App requires a 
   dependency:
  
   "webpack-dev-server": "3.1.14"
  
   Don't try to install it manually: your package manager does it 
   automatically.
   However, a different version of webpack-dev-server was detected higher up 
   in the tree:
  
   C:\Users\ashraf\node_modules\webpack-dev-server (version: 3.1.9)
  
   Manually installing incompatible versions is known to cause hard-to-debug 
   issues.
  
   If you would prefer to ignore this check, add SKIP_PREFLIGHT_CHECK=true to 
   an .env file in your project.
   That will permanently disable this message but you might encounter other 
   issues.
  
   To fix the dependency tree, try following the steps below in the exact 
   order:
  
   1. Delete package-lock.json (not package.json!) and/or yarn.lock in your 
   project folder.
   2. Delete node_modules in your project folder.
   3. Remove "webpack-dev-server" from dependencies and/or devDependencies in 
   the package.json file in your project folder.
   4. Run npm install or yarn, depending on the package manager you use.
  
   In most cases, this should be enough to fix the problem.
   If this has not helped, there are a few other things you can try:
  
   5. If you used npm, install yarn (http://yarnpkg.com/) and repeat the 
   above steps with it instead.
   This may help because npm has known issues with package hoisting which may 
   get resolved in future versions.
  
   6. Check if C:\Users\ashraf\node_modules\webpack-dev-server is outside 
   your project directory.
   For example, you might have accidentally installed something in your home 
   folder.
  
    7. Try running npm ls webpack-dev-server in your project folder.
   This will tell you which other package (apart from the expected react- 
   scripts) installed webpack-dev-server.
  
  If nothing else helps, add SKIP_PREFLIGHT_CHECK=true to an .env file in 
  your project.
  That would permanently disable this preflight check in case you want to 
  proceed anyway.
  
  P.S. We know this message is long but please read the steps above :-) We 
  hope you find them helpful!
  
  npm ERR! code ELIFECYCLE
  npm ERR! errno 1
  npm ERR! learnreact@0.1.0 start: `react-scripts start`
  npm ERR! Exit status 1
  npm ERR!
  npm ERR! Failed at the learnreact@0.1.0 start script.
  npm ERR! This is probably not a problem with npm. There is likely 
  additional logging output above.
  
  npm ERR! A complete log of this run can be found in:
  npm ERR!     C:\Users\ashraf\AppData\Roaming\npm-cache\_logs\2019-02- 
  04T20_36_39_924Z-debug.log
  PS C:\Users\ashraf\Desktop\Files\LearnReact\learnreact&gt;
  </code></pre>
  
  <p>i have tried all the steps in detail in the error log but its still not working, any thoughts on what is causing this error? Thanks in advance</p>