Not able to execute any rails or rake command

Question

When I try to execute any command, e.g. rake secret or rails server

I get the following error and rake is aborted:

The method YAML.enable_arbitrary_object_deserialization! is deprecated and will be removed in the next release of SafeYAML -- set the SafeYAML::OPTIONS[:default_mode] to either :safe or :unsafe.

Please advise. (I am a Ruby on Rails newbie).

score 1 · Accepted Answer · answered Mar 18 '13 at 23:02

1

Do the following:

1- Go to the root of your application.
2- From there, go to the `config` folder and open the `environment.rb`
3- Put `SafeYAML::OPTIONS[:deserialize_symbols] = true`
4- Try again.

That's a known issue listed in the Safe_Yaml gem: https://github.com/dtao/safe_yaml (See known issues section)

answered Mar 18 '13 at 23:02

fmendez

7,250
5
36
35

Thanks fmendez! But I am still getting the warning after adding that to environment.rb – Ankur Aggarwal Mar 19 '13 at 17:25

score 0 · Answer 2 · edited May 23 '17 at 12:28

Turns out I was using the wrong version of ruby and my rvm was broken. Also, my .rvmrc file was not bieng executed correctly.

I followed instructions at Installed Ruby 1.9.3 with RVM but command line doesn't show ruby -v and rebuild my RVM
Then integrated rvm with my shell: https://rvm.io/integration/gnome-terminal/
Installed correct version of ruby for my project: rvm install ruby-1.9.3-p374

I still get the 'YAML.enable..." warning, but the commands do execute now.

Not able to execute any rails or rake command

2 Answers2