_L6></a><a href="#C4_L7" id=C4_L7></a><a href="#C4_L8" id=C4_L8></a><a href="#C4_L9" id=C4_L9></a><a href="#C4_L10" id=C4_L10></a></span></code></pre></div>
<p>If the <code>loading</code> handler is not defined at the specific route,
the event will continue to bubble above a transition's parent
route, providing the <code>application</code> route the opportunity to manage it.</p>
</section>
<h2 id="toc_error-substates"><code>error</code> substates <a href="#toc_error-substates"><svg xmlns="http://www.w3.org/