'On Ruby: uninitialized constant Nokogiri::ClassResolver (NameError)

I've this issue currently when launching my .rb, that says 1: from /var/lib/gems/2.7.0/gems/nokogiri-1.13.1-x86_64-linux/lib/nokogiri/xml/node.rb:56:in `<module:XML>' /var/lib/gems/2.7.0/gems/nokogiri-1.13.1-x86_64-linux/lib/nokogiri/xml/node.rb:59:in `<class:Node>': uninitialized constant Nokogiri::ClassResolver (NameError)

I've put theses lines in my .rb :

require 'rubygems'
require 'nokogiri'
require 'open-uri'

doc = Nokogiri::HTML(open('http://www.google.com/search?q=doughnuts'))
puts doc

and my Gemfile contains this :

source 'https://rubygems.org'

ruby '2.7.4'
gem 'rspec'
gem 'nokogiri'
gem 'open-uri'

Does anyone have any idea about the problem or oversight that is causing this error?

Thanks!

Solution 1:^[1]

The "nokogiri" package updates version might have bugs so try to install lower version of nokogiri package after removes the new version....Try this,

I am not sure about it, I have read it in one senior developer post.

Solution 2:^[2]

The following fixed it for me:

sudo apt-get remove ruby-nokogiri

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1	che
Solution 2	Sam Ruby

'On Ruby: uninitialized constant Nokogiri::ClassResolver (NameError)

Solution 1:[1]

Solution 2:[2]

Sources

Related Questions

Solution 1:^[1]

Solution 2:^[2]