Update PreviewView.js

src/preview/PreviewView.js

@@ -55,8 +55,20 @@ class LoadedPreviewView extends TemplateView {
             t.div({className: "avatarContainer"}, avatar),
             t.h1(vm => vm.name),
             t.p({className: {identifier: true, hidden: vm => !vm.identifier}}, vm => vm.identifier),
-            t.div({className: {memberCount: true, hidden: vm => !vm.memberCount}}, t.p([vm => vm.memberCount, " members"])),
+            
-            t.p({className: {topic: true, hidden: vm => !vm.topic}}, [vm => vm.topic]),
+            t.div({
+                className: {
+                    memberCount: true, 
+                    hidden: vm => !vm.memberCount || vm.memberCount === "null"
+                }
+            }, t.p([vm => vm.memberCount, " members"])),
+            
+            t.p({
+                className: {
+                    topic: true, 
+                    hidden: vm => !vm.topic || vm.topic === "null"
+                }
+            }, [vm => vm.topic]),
         ]);
     }
 }