</h4></li></ul></li></ul></li><li><h5>onInitializationFailure: <span class="tsd-signature-symbol">(</span>connector<span class="tsd-signature-symbol">: </span><a href="default.html" class="tsd-signature-type" data-tsd-kind="Class">default</a>, err<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">Error</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol"> =&gt; </span><span class="tsd-signature-type">void</span><span class="tsd-signature-symbol"> = on