<p>add poper to user/templates/standard/header.php</p>
<p>(i.e. user_settings.php fails)</p>
<div style="color: #d4d4d4; background-color: #1e1e1e; font-family: 'Droid Sans Mono', 'monospace', monospace, 'Droid Sans Fallback'; font-weight: normal; font-size: 14px; line-height: 19px; white-space: pre;">
<div><span style="color: #808080;"><</span><span style="color: #569cd6;">script</span> <span style="color: #9cdcfe;">src</span><span style="color: #d4d4d4;">=</span><span style="color: #ce9178;">"https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.11.0/umd/popper.min.js"</span> <span style="color: #9cdcfe;">integrity</span><span style="color: #d4d4d4;">=</span><span style="color: #ce9178;">"sha384-b/U6ypiBEHpOf/4+1nzFpr53nxSS+GLCkfwBdFNTxtclqqenISfwAzpKaMNFNmj4"</span> <span style="color: #9cdcfe;">crossorigin</span><span style="color: #d4d4d4;">=</span><span style="color: #ce9178;">"anonymous"</span><span style="color: #808080;">></span><span style="color: #808080;"><</span><span style="color: #808080;">/</span><span style="color: #569cd6;">script</span><span style="color: #808080;">>)</span></div>
