“Could not find bundler” ruby-2.3.0
<p>I am installing Dashing Dashboard on Pi3. I have "Could not find 'bundler' problem in installation steps. How can I finish the installation?</p>

<pre><code>$ source /home/pi/.rvm/scripts/rvm
-&gt; OK

$ rvm current
ruby-2.3.0

$ bundle
/usr/lib/ruby/2.1.0/rubygems/dependency.rb:298:in 'to_specs': Could not find 'bundler' (&gt;= 0) among 42 total gem(s) (Gem::LoadError)
    from /usr/lib/ruby/2.1.0/rubygems/dependency.rb:309:in 'to_specs'
    from /usr/lib/ruby/2.1.0/rubygems/core_ext/kernel_gem.rb:53:in 'gem'
    from /usr/local/bin/bundle:22:in '&lt;main&gt;'

$ gem install bundler
-&gt; OK

$ bundle
-&gt; the same problem
</code></pre>