Removed index.html outside of 'public' folder. (All app files need to be inside.)

public/index.html

@@ -83,7 +83,7 @@
 	<script src="https://unpkg.com/bootstrap-material-design@4.1.1/dist/js/bootstrap-material-design.js" integrity="sha384-CauSuKpEqAFajSpkdjv3z9t8E7RlpJ1UP0lKM/+NdtSarroVKu069AlsRPKkFBz9" crossorigin="anonymous"></script>
 	<script>
 		document.addEventListener("DOMContentLoaded", function(){
-		$('body').bootstrapMaterialDesign();
+			$('body').bootstrapMaterialDesign();
 		}, false);
 		/*
 		$(document).ready(function() {