# Rails 3.1.0RC4 start server problem

**URL:** <https://www.ruby-forum.com/t/rails-3-1-0rc4-start-server-problem/208127>\
**Category:** Rails\
**Created:** [June 10, 2011, 5:48pm UTC](https://www.ruby-forum.com/t/rails-3-1-0rc4-start-server-problem/208127 "2011-06-10T17:48:05Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![dubstep](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/cdc98d/32.png) [@dubstep](https://www.ruby-forum.com/u/dubstep)\
**Post date:** [June 10, 2011, 5:48pm UTC](https://www.ruby-forum.com/t/rails-3-1-0rc4-start-server-problem/208127/1 "2011-06-10T17:48:05Z")

</div>

Hi guys,  
When I trying to start server. I get following errors:

user@user-desktop:~/todo$ rails s  
/home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/execjs-1.1.2/lib/  
execjs/runtimes.rb:43:in `autodetect': Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes. (ExecJS::RuntimeUnavailable) from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ execjs-1.1.2/lib/execjs.rb:5:in`module:ExecJS’  
from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
execjs-1.1.2/lib/execjs.rb:4:in `<top (required)>' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/coffee- script-2.2.0/lib/coffee_script.rb:1:in`require’  
from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/coffee-  
script-2.2.0/lib/coffee\_script.rb:1:in `<top (required)>' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/coffee- script-2.2.0/lib/coffee-script.rb:1:in`require’  
from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/coffee-  
script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ actionpack-3.1.0.rc4/lib/sprockets/railtie.rb:6:in`require’  
from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
actionpack-3.1.0.rc4/lib/sprockets/railtie.rb:6:in `using_coffee?' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ actionpack-3.1.0.rc4/lib/sprockets/railtie.rb:12:in`class:Railtie’  
from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
actionpack-3.1.0.rc4/lib/sprockets/railtie.rb:4:in  
`<module:Sprockets>' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ actionpack-3.1.0.rc4/lib/sprockets/railtie.rb:1:in`\<top (required)\>’  
from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
actionpack-3.1.0.rc4/lib/action\_controller/railtie.rb:7:in `require' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ actionpack-3.1.0.rc4/lib/action_controller/railtie.rb:7:in`\<top  
(required)\>’  
from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
activerecord-3.1.0.rc4/lib/active\_record/railtie.rb:9:in `require' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ activerecord-3.1.0.rc4/lib/active_record/railtie.rb:9:in`\<top  
(required)\>’  
from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
railties-3.1.0.rc4/lib/rails/all.rb:11:in `require' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ railties-3.1.0.rc4/lib/rails/all.rb:11:in`block in \<top (required)\>’  
from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
railties-3.1.0.rc4/lib/rails/all.rb:5:in `each' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ railties-3.1.0.rc4/lib/rails/all.rb:5:in`\<top (required)\>’  
from /home/user/apps/freekino/config/application.rb:3:in `require' from /home/user/apps/freekino/config/application.rb:3:in`\<top  
(required)\>’  
from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
railties-3.1.0.rc4/lib/rails/commands.rb:52:in `require' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ railties-3.1.0.rc4/lib/rails/commands.rb:52:in`block in \<top  
(required)\>’  
from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
railties-3.1.0.rc4/lib/rails/commands.rb:49:in `tap' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ railties-3.1.0.rc4/lib/rails/commands.rb:49:in`\<top (required)\>’  
from script/rails:6:in `require' from script/rails:6:in`’

Please help me!

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<div class="post-metadata">

**Author:** ![Zoloo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/e56c9b/32.png) [@Zoloo](https://www.ruby-forum.com/u/Zoloo)\
**Post date:** [June 10, 2011, 6:52pm UTC](https://www.ruby-forum.com/t/rails-3-1-0rc4-start-server-problem/208127/2 "2011-06-10T18:52:21Z")

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On 6/10/2011 10:05 AM, Zoloo wrote:

> from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
> actionpack-3.1.0.rc4/lib/sprockets/railtie.rb:6:in `require' actionpack-3.1.0.rc4/lib/action_controller/railtie.rb:7:in`require’  
> from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
> from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/

Not sure if this is the best way going forward – but to get you going  
now add the following line to your Gemfile and bundle install

gem ‘therubyracer’

–  
Jack C.  
removed\_email\_address@domain.invalid

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<div class="post-metadata">

**Author:** ![Zoloo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/e56c9b/32.png) [@Zoloo](https://www.ruby-forum.com/u/Zoloo)\
**Post date:** [June 10, 2011, 7:10pm UTC](https://www.ruby-forum.com/t/rails-3-1-0rc4-start-server-problem/208127/3 "2011-06-10T19:10:53Z")

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i believe you need a javascript engine to run your code…

try installing rubyracer as Jack said… I had a similar problem once  
and it  
worked

2011/6/10 Jack C. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)

> > ```
> > from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/
> > 
> > ```
> > 
> > script-2.2.0/lib/coffee-script.rb:1:in `<top (required)>' actionpack-3.1.0.rc4/lib/sprockets/railtie.rb:1:in `\<top (required)\>’  
> > from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/  
> > from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/

–  
Pedro Henrique de Souza Medeiros

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<div class="post-metadata">

**Author:** ![Zoloo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/e56c9b/32.png) [@Zoloo](https://www.ruby-forum.com/u/Zoloo)\
**Post date:** [June 11, 2011, 2:45am UTC](https://www.ruby-forum.com/t/rails-3-1-0rc4-start-server-problem/208127/4 "2011-06-11T02:45:16Z")

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Install nodejs

sudo apt-get install nodejs

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<div class="post-metadata">

**Author:** ![Zoloo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/e56c9b/32.png) [@Zoloo](https://www.ruby-forum.com/u/Zoloo)\
**Post date:** [July 5, 2011, 7:57pm UTC](https://www.ruby-forum.com/t/rails-3-1-0rc4-start-server-problem/208127/5 "2011-07-05T19:57:51Z")

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In your Gemfile

write this

gem ‘execjs’

gem ‘therubyracer’

and then run

bundle install

everything works fine for me 🙂

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<div class="post-metadata">

**Author:** ![Zoloo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/e56c9b/32.png) [@Zoloo](https://www.ruby-forum.com/u/Zoloo)\
**Post date:** [June 13, 2011, 6:00am UTC](https://www.ruby-forum.com/t/rails-3-1-0rc4-start-server-problem/208127/6 "2011-06-13T06:00:01Z")

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Thanks. It’s working.

On Sat, Jun 11, 2011 at 8:44 AM, Alex K. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
wrote:

> > user@user-desktop:~/todo$ rails s  
> > from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/coffee-  
> > actionpack-3.1.0.rc4/lib/sprockets/railtie.rb:12:in `<class:Railtie>' from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ from /home/user/.rvm/gems/ruby-1.9.2-p180@rails31rc4/gems/ railties-3.1.0.rc4/lib/rails/commands.rb:49:in `tap’  
> > To post to this group, send email to removed\_email\_address@domain.invalid.  
> > To unsubscribe from this group, send email to  
> > removed\_email\_address@domain.invalid.  
> > For more options, visit this group at  
> > [http://groups.google.com/group/rubyonrails-talk?hl=en](http://groups.google.com/group/rubyonrails-talk?hl=en).

–  
Best wishes,  
Zolzaya E. - Developer

“USI” LLC  
Building of Enkhuud center, 4th khoroo, 15th khoroolol  
Bayanzurkh district, Ulaanbaatar - 51, Mongolia

Mobile: (976) 99796493  
Phone: (976) 70151145  
Fax: (976) 70141146

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<div class="post-metadata">

**Author:** ![Zoloo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/e56c9b/32.png) [@Zoloo](https://www.ruby-forum.com/u/Zoloo)\
**Post date:** [December 15, 2011, 12:40pm UTC](https://www.ruby-forum.com/t/rails-3-1-0rc4-start-server-problem/208127/7 "2011-12-15T12:40:56Z")

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Yes its working now after adding that particular gems to gemlist.

Thank you Manish N.🙂

Manish N. wrote in post #1009188:

> In your Gemfile
> 
> write this
> 
> gem ‘execjs’
> 
> gem ‘therubyracer’
> 
> and then run
> 
> bundle install
> 
> everything works fine for me 🙂

---

<div class="post-metadata">

**Author:** ![Zoloo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/z/e56c9b/32.png) [@Zoloo](https://www.ruby-forum.com/u/Zoloo)\
**Post date:** [October 27, 2011, 12:53pm UTC](https://www.ruby-forum.com/t/rails-3-1-0rc4-start-server-problem/208127/8 "2011-10-27T12:53:41Z")

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thanks Manish N…

everything works fine for me as well:)