ring processing</dd>
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<h4>onError</h4>
<pre>void&nbsp;onError(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang">Throwable</a>&nbsp;t)</pre>
<div class="block">Invoked when an error occurs processing the request.</div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>t</code> - the thro