Returns LoadError (cannot load such file -- ibm_watson/authenticators):

[drwhirst]

I am trying to test out watson NLU features, and I keep getting this error:

LoadError (cannot load such file -- ibm_watson/authenticators):
  
app/controllers/concerns/watson.rb:2:in `<module:Watson>'
app/controllers/concerns/watson.rb:1:in `<main>'
app/controllers/messages_controller.rb:2:in `<class:MessagesController>'
app/controllers/messages_controller.rb:1:in `<main>'
Started POST "/messages" for ::1 at 2020-01-16 14:57:36 -0500

My ruby version is 2.6.2 and I am running on Rails 6.0.1

Please help

the code is as follows:

require "ibm_watson/authenticators"
    require "ibm_watson/natural_language_understanding_v1"
    include IBMWatson

    def parse_messages()
        authenticator = IBMWatson::Authenticators::IamAuthenticator.new(
            apikey: ENV['API_KEY'],
        )
         
        natural_language_understanding = NaturalLanguageUnderstandingV1.new(
            version: "2019-07-12",
            authenticator: authenticator
        )
        natural_language_understanding.service_url = ENV['API_URL']
        response = natural_language_understanding.analyze(
            url: "www.ibm.com",
            features: {categories: {limit:3}}
        )
        puts JSON.pretty_generate(response.result)
    end

[mamoonraja]

Hi @drwhirst , Thanks for opening the issue, can you please confirm which version of Ruby SDK are you using?

[drwhirst]

ibm_watson-0.20.1

[drwhirst]

I resolved this issue by switching my ruby version from 2.6.2 to 2.6.0, as 2.6.2 isn't supported by the gem

[rafaltrojanowski]

Same issue with ruby 2.6.3p62. Thanks for sharing @drwhirst

In my case downgrade to 2.6.0 didn't help. I had to use the latest master version of this gem to be able to run it with Rails 👍

Finally, I made it work with ruby 2.6.3p62

Gemfile:

gem 'ibm_watson', git: 'https://github.com/watson-developer-cloud/ruby-sdk', branch: 'master'

However, there were some problems with 'require_relative` on 2.7.0 with Rails 6.0:

24: from bin/rails:3:in `<main>'
	23: from bin/rails:3:in `require_relative'
(...)
.rbenv/versions/2.7.0/lib/ruby/gems/2.7.0/gems/bootsnap-1.4.0/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:21:in `require': no implicit conversion of String into Integer (TypeError)

[ajshemi]

I wonder if a solution has been found for this load error issue

[mamoonraja]

I see an issue on rails repo, It looks like the fix is to move to 6.0.x stable version. Which version are you using @ajshemi ?

[ajshemi]

I am using ruby 2.6.0p0 (2018-12-25 revision 66547) [x86_64-darwin17]. is the version acceptable?

[ajshemi]

It worked. I think I was missing the right apikey.

ruby version
ruby -v
ruby 2.6.1p33 (2019-01-30 revision 66950) [x86_64-darwin17]

my gemfile includes
ruby '2.6.1'
gem 'ibm_watson', '~> 1.3

[rafaltrojanowski]

I can say that when I added your gem to Gemfile in that way:

gem 'ibm_watson'

it installed a version where authenticator was missing in the codebase, so that was the reason for the error from the title.

Not sure how many Rails Devs would use this gem but IMHO it would be good to add docs for installation with Rails, like:

gem 'ibm_watson', '~> 1.3'

Btw, thanks for a great gem!

[mamoonraja]

@ajshemi Glad, it worked :)

Thanks, @rafaltrojanowski, Interesting why rails is not adding the recent version. We will look into adding additional instructions for people seeing this issue in rails. One additional issue with adding a specific version in the readme is that semantic release has to update readme too. Anyways we will update the instructions soon :)

[Mikemosca]

talked with @mamoonraja and will we close this one for now.