score:11

Accepted answer

Do not use save-dev for Redux. Remove it from devDependencies:

npm uninstall redux --save-dev

and install it again with:

npm i redux --save

score:1

after running npm install @reduxjs/toolkit try restarting your server.

score:7

Simply installing the react toolkit should fix the problem.

# NPM
npm install @reduxjs/toolkit

# Yarn
yarn add @reduxjs/toolkit

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