Error: window.datalayer is not defined

[DinerIsmail]

I have just updated to Webpack 4, and I am getting an error like in the above screenshot. I am using Redux Beacon right as in the documentation. Do you have any idea what the problem could be? Thanks!

[ttmarek]

Hey @DinerIsmail.

It looks like you're missing the dataLayer function on the window object. Have you included the Google Tag Manager snippet in your index.html file as described here?

[DinerIsmail]

Thanks for replying @ttmarek! I have done that, but it still doesn't work. It has actually worked fine with Webpack 3, just after I updated to Webpack 4 it stopped working. Therefore it might be an issue with Webpack 4 itself, but just wanted to make sure. If you hear of any related issues please let me know :)

[ttmarek]

Ah...It could be that the html-webpack-plugin is giving you issues. They didn't support webpack 4 right away. It looks like they might have pushed a new release out: jantimon/html-webpack-plugin#860.