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The "could not find react-redux context value" issue in Redux with Nextjs can be fixed by ensuring that the affected components are wrapped in a <Provider> from the react-redux library.

To do this, import the Provider component from react-redux and wrap it around the root component of your application. This will enable all child components to access the global store and dispatch Redux actions.

For example:

// import required modules
import React from 'react';
import { Provider } from 'react-redux';
import { store } from '../redux/store';

// wrap the root component with the Provider
const App = ({ Component, pageProps }) => (
  <Provider store={store}>
    <Component {...pageProps} />
  </Provider>
);

// export the App component
export default App;

In the example above, the store object is imported from the ./redux/store.js file, which contains the initial state and all Redux logic for the application. The App component is then wrapped in the <Provider> component with the store object passed as a prop.

By doing this, any child components of App can access the store by using the useSelector and useDispatch hooks from react-redux, without encountering the "could not find react-redux context value" error.