tructor 
</h1></div>

    <section class="multi-line-signature">
      const
      <span class="name ">ExceptionUnknownRoute</span>(<wbr>[<ol class="parameter-list single-line"> <li><span class="parameter" id="-param-message"><span class="type-annotation"><a href="https://api.dart.dev/stable/3.5.3/dart-core/Object-class.html">Object</a>?</span> <span class="parameter-name">message</span> = <span class="default-value">&#39;&#39;</span></span></li>
</ol>])
    </section>

    
<section class="desc markdown">
