<p dir="auto">I'm trying to customize a build of Bootstrap however everytime I download one, no matter what options I choose (even leaving all defaults) I get a css error.</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="A less error occured trying to build your bundle. You've likely entered an invalid input into the less variable field. Check your syntax and try again!

 thanks!


{&quot;type&quot;:&quot;Parse&quot;,&quot;message&quot;:&quot;missing opening `{`&quot;,&quot;filename&quot;:&quot;bootstrap.css&quot;,&quot;index&quot;:360070,&quot;line&quot;:6031,&quot;column&quot;:0,&quot;extract&quot;:[&quot;&lt;/html&gt;&quot;,&quot;&quot;,null]}"><pre class="notranslate"><code class="notranslate">A less error occured trying to build your bundle. You've likely entered an invalid input into the less variable field. Check your syntax and try again!

 thanks!


{"type":"Parse","message":"missing opening `{`","filename":"bootstrap.css","index":360070,"line":6031,"column":0,"extract":["&lt;/html&gt;","",null]}
</code></pre></div>
<p dir="auto">when the user try to download a custom version only without the responsive 1200, the navbar, and the hero unit, the download get an error &gt;<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://camo.githubusercontent.com/a833b492623744c08cac234ce7e1fb244d8d916418ddc35e8cde0d02b55c225a/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313039393538392f3532313734322f64333762313564302d626664312d313165322d393836652d6433363863333032343961612e706e67"><img src="https://camo.githubusercontent.com/a833b492623744c08cac234ce7e1fb244d8d916418ddc35e8cde0d02b55c225a/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313039393538392f3532313734322f64333762313564302d626664312d313165322d393836652d6433363863333032343961612e706e67" alt="captura de pantalla 2013-05-18 a la s 10 42 15" data-canonical-src="https://f.cloud.github.com/assets/1099589/521742/d37b15d0-bfd1-11e2-986e-d368c30249aa.png" style="max-width: 100%;"></a></p>
<p dir="auto">"""<br>
A less error occured trying to build your bundle. You've likely entered an invalid input into the less variable field. Check your syntax and try again!</p>
<p dir="auto">thanks!</p>
<p dir="auto">{}</p>
<p dir="auto">"""</p>