pan class="returntype parameter">&#8594; dynamic</span>
  </span>
  

</dt>
<dd class="inherited">
  Invoked when a non-existent method or property is accessed.
  <div class="features">inherited</div>

</dd>

        <dt id="onError" class="callable">
  <span class="name"><a href="../server_dartness_interceptor/DartnessInterceptor/onError.html">onError</a></span><span class="signature">(<wbr><span class="parameter" id="onError-param-error"><span class="type-annotation"><a href="https://api.flutter.dev/flutt