Cannot Load Such File - Active Support
<p>I am trying to start a rails server, but I get the error:</p>

<pre><code>/Users/&lt;username&gt;/RubyWorkspace/&lt;appname&gt;/vendor/bundle/gems/railties-5.0.0/lib/rails/commands/rake_proxy.rb:2:in `require': cannot load such file -- active_support (LoadError)
</code></pre>

<p>When I go to /vendor/bundle and list the gems, I don't see active support:</p>

<pre><code>actioncable-5.0.0       minitest-5.9.0
actionmailer-5.0.0      multi_json-1.12.1
actionpack-5.0.0        nio4r-1.2.1
actionview-5.0.0        pkg-config-1.1.7
activejob-5.0.0         rack-2.0.1
activemodel-5.0.0       rack-test-0.6.3
activerecord-5.0.0      rails-5.0.0
arel-7.0.0              rails-dom-testing-2.0.1
builder-3.2.2           rails-html-sanitizer-1.0.3
byebug-9.0.0            railties-5.0.0
byebug-9.0.5            rake-11.2.2
coffee-rails-4.2.1      rb-fsevent-0.9.7
coffee-script-2.4.1     rb-inotify-0.9.7
coffee-script-source-1.10.0 sass-3.4.22
concurrent-ruby-1.0.2       sass-rails-5.0.5
debug_inspector-0.0.2       spring-1.7.1
erubis-2.7.0            spring-1.7.2
execjs-2.7.0            spring-watcher-listen-2.0.0
ffi-1.9.14              sprockets-3.6.3
globalid-0.3.6          sprockets-rails-3.1.1
i18n-0.7.0              thor-0.19.1
jbuilder-2.4.1          thread_safe-0.3.5
jbuilder-2.5.0          tilt-2.0.5
jquery-rails-4.1.1      turbolinks-5.0.0
listen-3.0.8            turbolinks-source-5.0.0
loofah-2.0.3            tzinfo-1.2.2
mail-2.6.4              uglifier-3.0.0
method_source-0.8.2     web-console-3.1.1
mime-types-3.1          web-console-3.3.1
mime-types-data-3.2016.0521 websocket-driver-0.6.4
mini_portile2-2.1.0     websocket-extensions-0.1.2
</code></pre>

<p>But when I run bundle update, bundler says that it is using active support:</p>

<pre><code>Using rake 11.2.2
....
Using activesupport 5.0.0
....
Bundle updated!
Gems in the group production were not installed.
</code></pre>

<p>One thing that I believe could be causing the error, but I'm not sure, is when I run gem env, under gem paths, it shows:</p>

<pre><code>- GEM PATHS:
 - /Users/&lt;username&gt;/.rbenv/versions/2.3.1/lib/ruby/gems/2.3.0
 - /Users/&lt;username&gt;/.gem/ruby/2.3.0
</code></pre>

<p>Do I need to fix the gem paths, do I need to reinstall active support in a different directory, or is it something else entirely?</p>