Webpack error - Cannot read property 'thisCompilation' of undefined

I am using copy-webpack-plugin to copy my entire images folder from src to dist folder. I do not know what I am doing wrong. Can someone point it out?

snippet from webpack config

const CopyWebpackPlugin = require('copy-webpack-plugin');

module.exports = {
    plugins: [
	 new CopyWebpackPlugin({
	      patterns: [{
	           rom: 'src/images',
	            to: 'dist/temp'
	        }]
	 })
    ]
}

npm error

TypeError: Cannot read property 'thisCompilation' of undefined
    at CopyPlugin.apply (/opt/lampp/htdocs/gitwithravish/node_modules/copy-webpack-plugin/dist/index.js:338:20)
    at Compiler.apply (/opt/lampp/htdocs/gitwithravish/node_modules/tapable/lib/Tapable.js:375:16)
    at webpack (/opt/lampp/htdocs/gitwithravish/node_modules/webpack/lib/webpack.js:33:19)
    at processOptions (/opt/lampp/htdocs/gitwithravish/node_modules/webpack/bin/webpack.js:335:15)
    at yargs.parse (/opt/lampp/htdocs/gitwithravish/node_modules/webpack/bin/webpack.js:397:2)
    at Object.Yargs.self.parse (/opt/lampp/htdocs/gitwithravish/node_modules/webpack/node_modules/yargs/yargs.js:533:18)
    at Object.<anonymous> (/opt/lampp/htdocs/gitwithravish/node_modules/webpack/bin/webpack.js:152:7)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
    at Function.Module._load (internal/modules/cjs/loader.js:585:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:831:12)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:623:3)

Documentation link https://webpack.js.org/plugins/copy-webpack-plugin/