You are running 'create-react-app' 4.0.3, which is behind the latest release (5.0.1) Error

Problem

$ npx create-react-app my-app --template typescript

Need to install the following packages:
  create-react-app
Ok to proceed? (y) y

You are running `create-react-app` 4.0.3, which is behind the latest release (5.0.1).

We no longer support global installation of Create React App.

Please remove any global installs with one of the following commands:
- npm uninstall -g create-react-app
- yarn global remove create-react-app

The latest instructions for creating a new app can be found here:
https://create-react-app.dev/docs/getting-started/

Solution

Clear the npx cache and try running again

$ npx clear-npx-cache
Need to install the following packages:
  clear-npx-cache
Ok to proceed? (y) y

$ npx create-react-app my-app --template typescript