Steps to reproduce

I have installed a new Rails 8.0.2 app with rails new . I have checked and the welcome page of Rails worked.
Then I have followed the AlchemyCMS README to install it:

bundle add alchemy_cms
bundle add alchemy-devise
bin/rails g alchemy:devise:install

At this point, it complained that the manifest file was not there (the standard installation of rails has not created one), so I have created the empty file.

Expected to find a manifest file in app/assets/config/manifest.js (Sprockets::Railtie::ManifestNeededError)`

After that I continued with:

bin/rails alchemy:install

Accepting all default values.
I started the server with bin/dev and went to localhost:3000 and localhost:3000/admin.
I have got the error in both places.

Expected behavior

It should show the welcome page or the admin dashboard.

Actual behavior

I get the following error:

The asset "{\"media\" => \"all\"}.css" is not present in the asset pipeline.

System configuration

• Alchemy Version: 7.4.6
• Rails Version: 8.0.2

Any hint how to solve the problem would be much appreciated, thank you.