<p>I quite changed<br>
<code>route: to.lat + "," + to.lng + ";" + from.lat + "," + from.lng</code><br>
to<br>
<code>route: to ? (to.lat + "," + to.lng) : "" + ";" + from ? (from.lat + "," + from.lng) : ""</code></p>
<p>But this looks ugly</p>

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