internal/modules/cjs/loader:936 throw err; ^Error: Cannot find module 'webpack'

This error message typically indicates that the module 'webpack' is not installed or properly configured in your project.

To resolve this issue, you can try the following steps:

1. Check if 'webpack' is listed as a dependency in your project's package.json file. If it is not listed, you can install it by running the following command in your project directory:

npm install webpack --save-dev

2. If 'webpack' is already installed, try deleting the node_modules folder and reinstalling all dependencies by running the following commands:

rm -rf node_modules
npm install

3. If the above steps do not work, it may be possible that your project has a conflict with a globally installed version of 'webpack'. You can try uninstalling the global version by running the following command:

npm uninstall -g webpack

4. Finally, make sure that your project's webpack configuration file (usually named webpack.config.js) is properly configured and located in the root directory of your project.