Add try/catch to ignore DCFUtility errors

www/templates/5.0/embed-debug.tpl.php

@@ -15,9 +15,13 @@
     <?php echo $maincontent ?>
   </main>
   <script>
-    require(['https://unlcms.unl.edu/wdn/templates_5.3/js/compressed/dcf-utility.js', 'https://unlcms.unl.edu/wdn/templates_5.3/js/compressed/dcf-tabs.js'], function() {
-      DCFUtility.flagSupportsWebP();
-      DCFUtility.flagSupportsJavaScript();
+    require(['/wdn/templates_5.3/js/compressed/dcf-utility.js', '/wdn/templates_5.3/js/compressed/dcf-tabs.js'], function() {
+      try {
+        DCFUtility.flagSupportsWebP();
+        DCFUtility.flagSupportsJavaScript();
+      } catch(e) {
+        // do nothing;
+      }
 
       var tabs = document.querySelectorAll('.dcf-tabs');
       var unlTabs = new DCFTabs(tabs);