/span></span>
<span>                </span>
<span><span class="op">)</span></span>
<span></span>
<span><span class="co">## server.R</span></span>
<span><span class="va">server</span> <span class="op">&lt;-</span> <span class="kw">function</span><span class="op">(</span><span class="va">input</span>, <span class="va">output</span>, <span class="va">session</span><span class="op">)</span><span class="op">{</span></span>
<span>  </span>
<span>  <span class="va">token</span> <span class="op">&lt;-</span> <span 