I'm getting some warnings and errors in console.

Warning: Could not create web worker(s). Falling back to loading web worker code in main thread, which might cause UI freezes. Please see https://github.com/Microsoft/monaco-editor#faq

Error: Unexpected usage
    at EditorSimpleWorkerImpl.BaseEditorSimpleWorker.loadForeignModule (editorSimpleWorker.js?ccf6:468)
    at eval (webWorker.js?af50:39)

Error: undefined:1 Uncaught SyntaxError: Unexpected token <

I'm using vue-CLI 3 generated base app with vue.config.js:

const MonacoWebpackPlugin = require('monaco-editor-webpack-plugin');

module.exports = {
	configureWebpack: {
		plugins: [
			new MonacoWebpackPlugin({
				languages: ['javascript', 'css', 'html']
			})
		]
	}
}

What I'm doing wrong?