better error message

flutter/lib/pages/message_view/message_view.dart

@@ -195,15 +195,15 @@ class _MessageViewPageState extends State<MessageViewPage> {
             context: context,
             icon: FontAwesomeIcons.solidUser,
             title: 'User',
-            values: [user?.userID ?? '...', user?.username ?? ''],
-            mainAction: () => {/*TODO*/},
+            values: [user?.userID ?? message.senderUserID, user?.username ?? ''],
+            mainAction: () => FilteredMessageViewPage(title: user?.username ?? message.senderUserID, filter: MessageFilter(senderUserID: [message.senderUserID])),
           ),
           UI.metaCard(
             context: context,
             icon: FontAwesomeIcons.solidBolt,
             title: 'Priority',
             values: [_prettyPrintPriority(message.priority)],
-            mainAction: () => {/*TODO*/},
+            mainAction: () => FilteredMessageViewPage(title: "Priority ${message.priority}", filter: MessageFilter(priority: [message.priority])),
           ),
           if (message.senderUserID == userAccUserID) UI.button(text: "Delete Message", onPressed: () {/*TODO*/}, color: Colors.red[900]),
         ],