Spark application with Jetty embedded server is not logging bubbled exceptions
<p>It's a really basic setup, I am using slf4j-simple</p>

<p>I have the following route:</p>

<pre><code>    get("/fail", (req, res) -&gt; {
                throw new RuntimeException("fail");
            }
    );
</code></pre>

<p>As expected, it throws 500 internal error.</p>

<p>However, the logs show nothing about this. How can I get these bubbled exceptions to log?</p>

<p>These are the only logs I see:</p>

<pre><code>[Thread-0] INFO org.eclipse.jetty.util.log - Logging initialized @164ms
[Thread-0] INFO spark.embeddedserver.jetty.EmbeddedJettyServer - == Spark has ignited ...
[Thread-0] INFO spark.embeddedserver.jetty.EmbeddedJettyServer - &gt;&gt; Listening on 0.0.0.0:4567
[Thread-0] INFO org.eclipse.jetty.server.Server - jetty-9.3.z-SNAPSHOT
[Thread-0] INFO org.eclipse.jetty.server.ServerConnector - Started ServerConnector@35eae602{HTTP/1.1,[http/1.1]}{0.0.0.0:4567}
[Thread-0] INFO org.eclipse.jetty.server.Server - Started @259ms
</code></pre>