d, the router will immediately transition into
that substate (without updating the URL). The "reason" for the error
(i.e. the exception thrown or the promise reject value) will be passed
to that error state as its <code>model</code>.</p>
<p>If no viable error substates can be found, an error message will be
logged.</p>
</section>
<h3 id="toc_the-error-event">The <code>error</code> event <a href="#toc_the-error-event"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
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