vinothkannans encountered an issue when trying to install Discourse on their local Windows system using Vagrant. The error message “Could not find module pretty-text/pretty-text” appeared after running the command bundle exec rake db:migrate. The error was raised on the line == Seed from /vagrant/db/fixtures/500_lounge_category.rb.
vinothkannans provided more details on the error and suspected that the problem was caused by a require statement in the lib/pretty_text/shims.js file.
vinothkannans eventually fixed the issue themselves by submitting a pull request to the Discourse repository (https://github.com/discourse/discourse/pull/4421). The fix involved adding chomp to a Regexp to remove a weird last line character. This issue only occurred when using Vagrant on a Windows PC, and not when using Docker or a Ubuntu development environment.
I followed the instruction below to install Discourse on my local windows system
I got below error after the command bundle exec rake db:migrate
Could not find module pretty-text/pretty-text
Error raised on the line
== Seed from /vagrant/db/fixtures/500_lounge_category.rb
For more details i attached the error below
== Seed from /vagrant/db/fixtures/009_users.rb
- User {:id=>-1, :name=>"system", :username=>"system", :username_lower=>"system", :email=>"no_email", :password=>"180b8ba3113f54b33d61a313277c4f01", :active=>true, :admin=>true, :moderator=>true, :approved=>true, :trust_level=>4}
== Seed from /vagrant/db/fixtures/500_lounge_category.rb
rake aborted!
MiniRacer::RuntimeError: Error: Could not find module pretty-text/pretty-text/nError: Could not find module pretty-text/pretty-text
JavaScript at missingModule (<anonymous>:117:11)
JavaScript at requireModule (<anonymous>:127:17)
JavaScript at <anonymous>:1:16
/home/vagrant/.rvm/gems/ruby-2.3.1/gems/mini_racer-0.1.3/lib/mini_racer.rb:99:in `eval_unsafe'
/home/vagrant/.rvm/gems/ruby-2.3.1/gems/mini_racer-0.1.3/lib/mini_racer.rb:99:in `block in eval'
/home/vagrant/.rvm/gems/ruby-2.3.1/gems/mini_racer-0.1.3/lib/mini_racer.rb:97:in `synchronize'
/home/vagrant/.rvm/gems/ruby-2.3.1/gems/mini_racer-0.1.3/lib/mini_racer.rb:97:in `eval'
/home/vagrant/.rvm/gems/ruby-2.3.1/gems/mini_racer-0.1.3/lib/mini_racer.rb:93:in `load'
/vagrant/lib/pretty_text.rb:82:in `create_es6_context'
/vagrant/lib/pretty_text.rb:105:in `block in v8'
/vagrant/lib/pretty_text.rb:103:in `synchronize'
/vagrant/lib/pretty_text.rb:103:in `v8'
/vagrant/lib/pretty_text.rb:124:in `block in markdown'
/vagrant/lib/pretty_text.rb:359:in `block in protect'
/vagrant/lib/pretty_text.rb:358:in `synchronize'
/vagrant/lib/pretty_text.rb:358:in `protect'
/vagrant/lib/pretty_text.rb:123:in `markdown'
/vagrant/lib/pretty_text.rb:211:in `cook'
/vagrant/app/models/post_analyzer.rb:17:in `cook'
/vagrant/app/models/post.rb:219:in `cook'
/vagrant/lib/post_creator.rb:203:in `before_create_tasks'
/vagrant/app/models/post.rb:480:in `block in <class:Post>'
I think the problem is raised at require statement in below file
require('pretty-text/pretty-text')
Finally I fixed it myself (check below PR). Just one line code fixed it.
https://github.com/discourse/discourse/pull/4421
Here when we use Regexp without chomp it have some weird last line char. (maybe \n). Without this change initial db migration failing always in Vagrant with == Seed from /vagrant/db/fixtures/500_lounge_category.rb.
Also I am not facing this issue in docker installation. Even in Ubuntu development guide. Only in Vagrant. Weird 
Edit: File are in Windows PC. Maybe that’s the reason