Error installing Bundler

Question

I am trying to install the Bundler gem on my Mac. With the command: sudo gem install bundler I get the following error:

ERROR:  Could not find a         


        

Answer 1

Bundler 2 requires at least Ruby 2.3.0 and RubyGems 2.5.0. You might get the following error when you try to install bundler for Ruby < 2.3:

COPY

  ERROR:  Error installing bundler:
  bundler requires Ruby version >= 2.3.0.

To fix this error upgrade your project's ruby version or install the last supported version of Bundler for Ruby < 2.3:

COPY gem install bundler -v '~>1'

Answer 2

Windows users:

You can't run rvm command on Windows as you can see here, but you can fix the error without it. Just add a new source adress with http instead of https:

gem sources -a http://rubygems.org

Then you can run:

gem install bundler

Answer 3

Bundler 2 requires at least Ruby 2.3.0 and RubyGems 2.5.0.

You might get the following error when you try to install bundler for Ruby < 2.3:

ERROR:  Error installing bundler:
bundler requires Ruby version >= 2.3.0.

To fix this error upgrade your project's ruby version OR Install the last supported version of Bundler for Ruby < 2.3 by running only below command.

gem install bundler -v '~>1'

Answer 4

1. Here is my error when I input the command sudo gem install bundler --no-ri --no-rdoc.

ERROR: Could not find a valid gem 'bundler' (>= 0), here is why: Unable to download data from https://rubygems.org/ - Errno::ECONNRESET: Connection reset by peer - SSL_connect (https://api.rubygems.org/latest_specs.4.8.gz)

2. And my solution is input the next command lines:

gem sources --remove https://rubygems.org/

gem sources --remove http://rubygems.org/

gem sources -l

and the output show:

*** CURRENT SOURCES *** http://rubygems.org/

3. Then, try sudo gem install bundler --no-ri --no-rdoc again:

Fetching: bundler-1.11.2.gem (100%) Successfully installed bundler-1.11.2 1 gem installed

Bingo!!!

Answer 5

for those Chinese users:

$ gem install bundler
ERROR:  Could not find a valid gem 'bundler' (>= 0), here is why:
          Unable to download data from https://rubygems.org/ - Errno::ECONNRESET: Connection reset by peer - SSL_connect (https://api.rubygems.org/latest_specs.4.8.gz)

$ gem sources --add https://ruby.taobao.org/ --remove https://rubygems.org/

$ gem sources  -l
*** CURRENT SOURCES ***

https://ruby.taobao.org/

$ gem install bundler 

Fetching: bundler-1.12.5.gem (100%)
Successfully installed bundler-1.12.5
Parsing documentation for bundler-1.12.5
Installing ri documentation for bundler-1.12.5
Done installing documentation for bundler after 4 seconds
1 gem installed

My environment: rbenv, ruby 2.1.2, ubuntu 16.04 LTS

Answer 6

For those that arent using rvm, but are using homebrew:

brew tap raggi/ale
brew install openssl-osx-ca

This worked for me.