<p dir="auto">Looking at the web profiler in Silex I saw</p>
<blockquote>
<p dir="auto"><strong>Notice</strong>: Undefined offset: 1 in <strong>/srv/http/tronatic-studio.com/vendor/symfony/http-kernel/DataCollector/RequestDataCollector.php</strong> on line <strong>280</strong></p>
<p dir="auto"><strong>Warning</strong>: Invalid argument supplied for foreach() in <strong>/srv/http/tronatic-studio.com/vendor/symfony/http-kernel/DataCollector/RequestDataCollector.php</strong> on line <strong>280</strong></p>
</blockquote>
<p dir="auto">under <strong>Route Parameters</strong>.</p>
<p dir="auto"><a href="https://github.com/symfony/symfony/blob/master/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php#L280">https://github.com/symfony/symfony/blob/master/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php#L280</a></p>
<p dir="auto">The matching route didn't have any parameter.</p>
<p dir="auto">Don't know why <a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/symfony/symfony/commit/2e404d07021d4c01f9ca831a7bb222efc15bed70/hovercard" href="https://github.com/symfony/symfony/commit/2e404d07021d4c01f9ca831a7bb222efc15bed70"><tt>2e404d0</tt></a> introduced this.</p>
<p dir="auto">Dumping <code class="notranslate">$data-&gt;getRawData()</code> shows</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="array(1) { [0]=&gt; array(1) { [0]=&gt; array(0) { } } } "><pre class="notranslate"><code class="notranslate">array(1) { [0]=&gt; array(1) { [0]=&gt; array(0) { } } } 
</code></pre></div>
<p dir="auto">Steps to reproduce:</p>
<div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="symfony new symfony-app 3.2.0-RC2
cd symfony-app
bin/console s:start
open http://127.0.0.1:8000
open http://127.0.0.1:8000/_profiler/{token}?panel=router"><pre class="notranslate">symfony new symfony-app 3.2.0-RC2
<span class="pl-c1">cd</span> symfony-app
bin/console s:start
open http://127.0.0.1:8000
open http://127.0.0.1:8000/_profiler/{token}<span class="pl-k">?</span>panel=router</pre></div>
<p dir="auto">The exception:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="An exception has been thrown during the rendering of a template (&quot;Notice: Undefined offset: 1&quot;) in @WebProfiler/Router/panel.html.twig at line 20."><pre class="notranslate"><code class="notranslate">An exception has been thrown during the rendering of a template ("Notice: Undefined offset: 1") in @WebProfiler/Router/panel.html.twig at line 20.
</code></pre></div>
<p dir="auto">And the <code class="notranslate">ContextErrorException</code> points to <code class="notranslate">vendor/symfony/symfony/src/Symfony/Component/HttpKernel/DataCollector/RequestDataCollector.php:280</code>.</p>