Firebase Error: Authentication required with firebase-tools
<p>I've just installed the firebase-tools with the as usual npm package installation process : </p>

<pre><code>npm install -g firebase-tools 
</code></pre>

<p>i've already created a Firebase account connect with Google Account, but the problem is that the only procedure i can made with the command line tool is : </p>

<pre><code>firebase login          // with success 
firebase prefs:token    // return me the auth token 
</code></pre>

<p>but every time i try the other commands i get the error : </p>

<pre><code>Error: Authentication required. 
</code></pre>

<p>for example for the command init, list etc : </p>

<pre><code>firebase init         // error 
firebase list         // error 
</code></pre>

<p>and so on ... why ? </p>

<p>The version of npm, node and firebase-tools : </p>

<pre><code>node : v4.2.2
npm : 3.3.12
firebase : 2.2.0
</code></pre>