tkhobbes

tkhobbes

Modern Front-End Development for Rails - application does not start after run bin/setup (page xviii)

After some hassle, I was able to finally run bin/setup, now I have started the rails server but I get this error message right when I visit the homepage:

ctionView::Template::Error (Webpacker can’t find application.css in /Users/thomas/Documents/Websites/rails-frontend/public/packs/manifest.json. Possible causes:

  1. You want to set webpacker.yml value of compile to true for your environment
    unless you are using the webpack -w or the webpack-dev-server.
  2. webpack has not yet re-run to reflect updates.
  3. You have misconfigured Webpacker’s config/webpacker.yml file.
  4. Your webpack configuration is not creating a manifest.
    Your manifest contains:
    {
    “application.js”: “/packs/js/application-e2d1692aebb36c02d64a.js”,
    “entrypoints”: {
    “application”: {
    “assets”: {
    “js”: [
    “/packs/js/runtime-a264c6705547ad01acbb.js”,
    “/packs/js/vendors-node_modules_rails_activestorage_app_assets_javascripts_activestorage_js-node_modules-2576d4-9a719947c3eb6bc6295c.js”,
    “/packs/js/application-e2d1692aebb36c02d64a.js”
    ]
    }
    }
    },
    “js/application-e2d1692aebb36c02d64a.js.map”: “/packs/js/application-e2d1692aebb36c02d64a.js.map”,
    “js/runtime-a264c6705547ad01acbb.js.map”: “/packs/js/runtime-a264c6705547ad01acbb.js.map”,
    “js/vendors-node_modules_rails_activestorage_app_assets_javascripts_activestorage_js-node_modules-2576d4-9a719947c3eb6bc6295c.js”: “/packs/js/vendors-node_modules_rails_activestorage_app_assets_javascripts_activestorage_js-node_modules-2576d4-9a719947c3eb6bc6295c.js”,
    “js/vendors-node_modules_rails_activestorage_app_assets_javascripts_activestorage_js-node_modules-2576d4-9a719947c3eb6bc6295c.js.map”: “/packs/js/vendors-node_modules_rails_activestorage_app_assets_javascripts_activestorage_js-node_modules-2576d4-9a719947c3eb6bc6295c.js.map”,
    “runtime.js”: “/packs/js/runtime-a264c6705547ad01acbb.js”
    }
    ):
    5:
    6: <%= csrf_meta_tags %>
    7: <%= csp_meta_tag %>
    8: <%= stylesheet_pack_tag(
    9: “application”,
    10: media: “all”,
    11: “data-turbolinks-track”: “reload”

app/views/layouts/application.html.erb:8

I am not 100% sure what is wrong here?

First Post!

noelrappin

noelrappin

Author of Modern Front-End Development for Rails

So, webpacker is not generating the application.css file for some reason – this is a webpack error that sometimes happens intermittently when webpacker gets into a strange state.

Are you running this off the sample code directly, or have you been trying to build the app yourself? Is there another error in the logs that suggests that the app/packs/entrypoint/application.scss file didn’t compile?

You could try removing the /public/packs directory and trying again?

I’m sorry you are having this problem.

Alternately, the second edition of the book doesn’t use webpack, and should be easier to set up, if you purchased the ebook from Pragmatic, you get the second edition for free, and it might be worth you trying out.

Noel

Where Next?

Popular Pragmatic Bookshelf topics Top

belgoros
Following the steps described in Chapter 6 of the book, I’m stuck with running the migration as described on page 84: bundle exec sequel...
New
telemachus
Python Testing With Pytest - Chapter 2, warnings for “unregistered custom marks” While running the smoke tests in Chapter 2, I get these...
New
Alexandr
Hi everyone! There is an error on the page 71 in the book “Programming machine learning from coding to depp learning” P. Perrotta. You c...
New
jeremyhuiskamp
Title: Web Development with Clojure, Third Edition, vB17.0 (p9) The create table guestbook syntax suggested doesn’t seem to be accepted ...
New
New
nicoatridge
Hi, I have just acquired Michael Fazio’s “Kotlin and Android Development” to learn about game programming for Android. I have a game in p...
New
digitalbias
Title: Build a Weather Station with Elixir and Nerves: Problem connecting to Postgres with Grafana on (page 64) If you follow the defau...
New
brunogirin
When trying to run tox in parallel as explained on page 151, I got the following error: tox: error: argument -p/–parallel: expected one...
New
s2k
Hi all, currently I wonder how the Tailwind colours work (or don’t work). For example, in app/views/layouts/application.html.erb I have...
New
kolossal
Hi, I need some help, I’m new to rust and was learning through your book. but I got stuck at the last stage of distribution. Whenever I t...
New

Other popular topics Top

PragmaticBookshelf
Ruby, Io, Prolog, Scala, Erlang, Clojure, Haskell. With Seven Languages in Seven Weeks, by Bruce A. Tate, you’ll go beyond the syntax—and...
New
PragmaticBookshelf
From finance to artificial intelligence, genetic algorithms are a powerful tool with a wide array of applications. But you don't need an ...
New
AstonJ
This looks like a stunning keycap set :orange_heart: A LEGENDARY KEYBOARD LIVES ON When you bought an Apple Macintosh computer in the e...
New
Exadra37
I am asking for any distro that only has the bare-bones to be able to get a shell in the server and then just install the packages as we ...
New
PragmaticBookshelf
Build highly interactive applications without ever leaving Elixir, the way the experts do. Let LiveView take care of performance, scalabi...
New
New
Margaret
Hello everyone! This thread is to tell you about what authors from The Pragmatic Bookshelf are writing on Medium.
1147 29994 760
New
rustkas
Intensively researching Erlang books and additional resources on it, I have found that the topic of using Regular Expressions is either c...
New
AstonJ
Saw this on TikTok of all places! :lol: Anyone heard of them before? Lite:
New
NewsBot
Node.js v22.14.0 has been released. Link: Release 2025-02-11, Version 22.14.0 'Jod' (LTS), @aduh95 · nodejs/node · GitHub
New

Sub Categories: