Instructions.

1. DELETE view/lean/ideas.php in your files.
2. INSERT in index.php this html code

	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/selectize.js/0.13.3/css/selectize.css" integrity="sha512-85w5tjZHguXpvARsBrIg9NWdNy5UBK16rAL8VWgnWXK2vMtcRKCBsHWSUbmMu0qHfXW2FVUDiWr6crA+IFdd1A==" crossorigin="anonymous" referrerpolicy="no-referrer" />
	<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/selectize.js/0.13.3/css/selectize.bootstrap4.min.css" integrity="sha512-MMojOrCQrqLg4Iarid2YMYyZ7pzjPeXKRvhW9nZqLo6kPBBTuvNET9DBVWptAo/Q20Fy11EIHM5ig4WlIrJfQw==" crossorigin="anonymous" referrerpolicy="no-referrer" />
	<script src="https://cdnjs.cloudflare.com/ajax/libs/selectize.js/0.13.3/js/standalone/selectize.min.js" integrity="sha512-pF+DNRwavWMukUv/LyzDyDMn8U2uvqYQdJN0Zvilr6DDo/56xPDZdDoyPDYZRSL4aOKO/FGKXTpzDyQJ8je8Qw==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>