# Modern Front-End Development for Rails: **URL:** \ **Category:** PragProg Customers\ **Tags:** question, book-modern-front-end-development-for-rails\ **Created:** [26 August 2021 00:51 UTC](https://forum.devtalk.com/t/modern-front-end-development-for-rails/18916 "2021-08-26T00:51:07Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![papergirl](https://forum.devtalk.com/letter_avatar_proxy/v4/letter/p/aca169/32.png) [@papergirl](https://forum.devtalk.com/u/papergirl)\ **Post date:** [26 August 2021 00:51 UTC](https://forum.devtalk.com/t/modern-front-end-development-for-rails/18916/1 "2021-08-26T00:51:07Z")
The webpack/base.js sample continues to throw errors, is an updated version available or are these options still supposed to be valid and it’s something in my app? Title: Mordern Front-End Development for Rails: webpack config (10%) ---
**Author:** ![noelrappin](https://forum.devtalk.com/user_avatar/forum.devtalk.com/noelrappin/32/481_2.png) [@noelrappin](https://forum.devtalk.com/u/noelrappin)\ **Post date:** [29 August 2021 12:43 UTC](https://forum.devtalk.com/t/modern-front-end-development-for-rails/18916/2 "2021-08-29T12:43:08Z")
Sorry for not responding sooner, can you tell me where you are in the book, which version of the code is throwing the error and what the error is? Thanks! ---
**Author:** ![papergirl](https://forum.devtalk.com/letter_avatar_proxy/v4/letter/p/aca169/32.png) [@papergirl](https://forum.devtalk.com/u/papergirl)\ **Post date:** [30 August 2021 13:55 UTC](https://forum.devtalk.com/t/modern-front-end-development-for-rails/18916/3 "2021-08-30T13:55:38Z")
I did get it working, I ended up removing webpacker and reinstalling that and also reinstalling hotwire using rails hotwire:install and that seemed to take care of it. The sample webpack config was throwing: Cannot find module ‘fork-ts-checker-webpack-plugin’ and TypeError: merge is not a function