All gem commands fail with "cannot load such file" errors

Question

When I run any gem command, I get this message:

Error loading RubyGems plugin 
"/home/thiago/.rbenv/versions/2.4.0/lib/ruby/gems/2.4.0/gems/yard-
0.8.2.1/lib/rubygems_plugin.rb": cannot load such file -- 
rubygems/doc_manager (LoadError)

In this case, I run a simple gem --version. I'm using gem version: 2.6.8.

Any idea how to fix it?

Try reinstalling the ruby. This is many times caused by updating of ruby and the likes. — Saša Zejnilović, Jun 12 '17 at 12:45

score 2 · Accepted Answer · edited Aug 02 '17 at 17:50

2

It's likely your installation of Ruby 2.4.0 is broken. First make sure it's installed:

$ rbenv versions

It should also have an asterisk next to it:

* 2.4.0 (set by /home/thiago/.rbenv/version)

If everything looks correct, I'd recommend uninstalling and reinstalling 2.4.0. If you still can't run gem commands, you might need to reinstall rbenv as well.

All gem commands fail with "cannot load such file" errors

1 Answers1