diff --git a/src/app/pages/charts/d3/d3.component.html b/src/app/pages/charts/d3/d3.component.html
index b848d38b..bb1275bd 100644
--- a/src/app/pages/charts/d3/d3.component.html
+++ b/src/app/pages/charts/d3/d3.component.html
@@ -39,12 +39,4 @@
       </nb-card-body>
     </nb-card>
   </div>
-  <div class="col-lg-6">
-    <nb-card>
-      <nb-card-header>Polar Chart</nb-card-header>
-      <nb-card-body>
-        <ngx-d3-polar></ngx-d3-polar>
-      </nb-card-body>
-    </nb-card>
-  </div>
 </div>
diff --git a/src/app/pages/ui-features/tabs/tabs.component.ts b/src/app/pages/ui-features/tabs/tabs.component.ts
index ba4eb94b..9f60d3f5 100644
--- a/src/app/pages/ui-features/tabs/tabs.component.ts
+++ b/src/app/pages/ui-features/tabs/tabs.component.ts
@@ -4,7 +4,7 @@ import { Component } from '@angular/core';
   selector: 'ngx-tab1',
   template: `
     <p>Early home automation began with labor-saving machines. Self-contained electric or gas powered
-      <a target="_blank" href="https://en.wikipedia.org/wiki/Home_appliances">home appliances</a> 
+      <a target="_blank" href="https://en.wikipedia.org/wiki/Home_appliances">home appliances</a>
       became viable in the 1900s with the introduction of
       <a target="_blank" href="https://en.wikipedia.org/wiki/Electric_power_distribution">electric power distribution
       </a> and led to the introduction of washing machines (1904), water heaters (1889), refrigerators, sewing machines,
diff --git a/src/polyfills.ts b/src/polyfills.ts
index d0418cde..d697c6a1 100644
--- a/src/polyfills.ts
+++ b/src/polyfills.ts
@@ -69,3 +69,9 @@ import 'zone.js/dist/zone';  // Included with Angular CLI.
  * Needed for: All but Chrome, Firefox, Edge, IE11 and Safari 10
  */
 import 'intl';  // Run `npm install --save intl`.
+
+import 'core-js/es7/array';
+
+if (typeof SVGElement.prototype.contains === 'undefined') {
+  SVGElement.prototype.contains = HTMLDivElement.prototype.contains;
+}