your global angular cli version 10.0 0 is greater than your local code example

Example 1: Global Angular CLI version greater than local version

npm install --save-dev @angular/cli@latest

Example 2: Your global Angular CLI version (11.0.2) is greater than your local version

# Install npm-check-updates
$ npm i -g npm-check-updates

# Run npm-check-updates with -u, will upgrade package.json
$ ncu -u

# Install updated packages
$ npm install