Answers for "webpack module not found: error: can't resolve @"

webpack Module not found: Error: Can't resolve '../

resolve: {
    modules: [resolve(process.cwd(), 'src'), 'node_modules'],
    extensions: ['*', '.js', '.jsx', '.json'],
    symlinks: false,
    cacheWithContext: false
  }

Module not found: Can't resolve ''

# if not installed
npm install <pkgName>

# if installed but gives error, uninstall then install
npm uninstall <pkgName>
npm install <pkgName>