There may be multiple reasons. Here are some common mistakes and solutions:
Error: "npx: Cannot find module create-react-app in your system"
Solution: This error is usually caused by not installing create-react-app on your system. You can try to install create-react-app globally using npm: npm install -g create-react-app. If you already have create-react-app installed and still have this problem, try upgrading the npm version and run the command again.
Extension: react-scripts are not internal or external commands, nor are they runnable programs or batch files.
When using the React project created with create-react-app, you should use other people's projects to run npm start. 'react-scripts' will not be an internal or external command, nor a runnable program or batch file error. It is because the create-react-app has a packet loss defect. After manually installing the package, you need to re-npm install so that the react-scripts file will reappear in the node_modules/.bin/ directory, so that the npm start command can be executed normally.
Solution: After npm install react-scripts or npm install installation is completed, run npm start again
Error: "npx: Unable to resolve module extension.js to executable"
Workaround: This error may be caused by npx's inability to parse the command correctly. You can try using npm to run create-react-app:npm create-react-app my-app.
Error: "Template cannot be downloaded"
Solution: This error is usually caused by a network problem. You can try using a proxy or switching to another network environment to resolve this issue. In addition, you can also try to use npm's mirror source to download templates, such as using Taobao image: npx create-react-app my-app --registry=.
Summary: An error occurred while using npx create-react-app my-app may be due to a lack of dependency, network issues, or npx parsing errors. You can try installing the required dependencies, upgrading the npm version, running create-react-app with the npm command, checking network connections, or using a mirror source to resolve the problem. For the creation of React applications, Tencent Cloud also provides a series of cloud products, such as cloud function SCF, lightweight application server Lighthouse, etc. You can choose the right product according to your specific needs.
Error: npm ERR! code ENOLOCAL Could not install from
Error prompt:
npm ERR! code ENOLOCAL
Could not install from "Files\nodejs\node_cache\_npx\29476" as it does not contain a file.
reason:
The node path has spaces
Open the DOS window and execute npm config get cache
Display: C:\Program Files\nodejs\node_cache
Space refers to the space in the middle of [Program Files]
Solution:
Replace [Program Files] with [Program~1]
Execution: npm config set cache "C:\Program~1\nodejs\node_cache"--global