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Editorial Team
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Asked: 2026-06-15T22:05:21+00:00

I’m trying to run the examples provided by the Hallon gem https://github.com/Burgestrand/Hallon I followed

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I’m trying to run the examples provided by the Hallon gem https://github.com/Burgestrand/Hallon

I followed all these instructions:
https://github.com/Burgestrand/Hallon/wiki

But, I’m still having an issue. Below is the error I’m getting. Any help would be greatly appreciated!

Basils-MacBook-Pro:Hallon Basil$ ruby examples/show_published_playlists_of_user.rb
/Users/Basil/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in require': cannot load such file -- weak_observable (LoadError)
from /Users/Basil/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:inrequire’
from /Users/Basil/Desktop/Hallon/lib/hallon.rb:6:in <top (required)>'
from /Users/Basil/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:inrequire’
from /Users/Basil/.rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in require'
from /Users/Basil/Desktop/Hallon/examples/example_support.rb:46:in‘
from examples/show_published_playlists_of_user.rb:4:in require_relative'
from examples/show_published_playlists_of_user.rb:4:in‘

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1 Answer

  1. Editorial Team

    The error message contains the answer:

    require': cannot load such file -- weak_observable (LoadError)

    Which means this should solve your problem:

    gem install weak_observable
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