error has occurred during processing</dd>
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<h4>onError</h4>
<pre class="methodSignature">void&nbsp;onError&#8203;(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang" class="externalLink">Throwable</a>&nbsp;t)</pre>
<div class="block">Invoked when an error occurs processing the request.</di