Repository: create-react-app
Issue: Found: react@undefined when run npx create-react-app
Labels: needs triage,issue: bug report

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### Describe the bug

```
Found: react@undefined
node_modules/react
  react@"*" from the root project

Could not resolve dependency:
peer react@"17.0.2" from react-dom@17.0.2
node_modules/react-dom
  react-dom@"*" from the root project

Fix the upstream dependency conflict, or retry
this command with --force, or --legacy-peer-deps
to accept an incorrect (and potentially broken) dependency resolution.

```
Error when running with create-react-app.

I have tried on an exisiting project to install package @material-ui and received similiar result as above (Found react@undefined)

### Did you try recovering your dependencies?

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### Which terms did you search for in User Guide?

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  Please scan these few sections for common problems.
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  https://facebook.github.io/create-react-app/

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### Environment

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  Run the following command in your React app's folder in terminal.
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  `npx create-react-app --info`

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```
Environment Info:

  current version of create-react-app: 4.0.3
  running from C:\Users\sienn\AppData\Roaming\npm\node_modules\create-react-app

  System:
    OS: Windows 10 10.0.18363
    CPU: (8) x64 Intel(R) Core(TM) i5-10300H CPU @ 2.50GHz
  Binaries:
    Node: 16.3.0 - ~\AppData\Roaming\npm\node.CMD
    Yarn: Not Found
    npm: 7.18.1 - ~\AppData\Roaming\npm\npm.CMD
  Browsers:
    Chrome: Not Found
    Edge: Spartan (44.18362.449.0)
    Internet Explorer: 11.0.18362.1
  npmPackages:
    react: Not Found
    react-dom: Not Found
    react-scripts: Not Found
  npmGlobalPackages:
    create-react-app: Not Found
```

### Steps to reproduce

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(Write your steps here:)

1. npx create-react-app my-app

### Expected behavior

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Successfully created React App

### Actual behavior

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![image](https://user-images.githubusercontent.com/24917769/122927190-4ce87500-d371-11eb-9041-b9e6652ec779.png)