handle null user.server

Co-authored-by: Erik Sundell <erik.i.sundell@gmail.com>

jsx/src/components/ServerDashboard/ServerDashboard.jsx

@@ -177,7 +177,7 @@ const ServerDashboard = (props) => {
 
   let servers = user_data.flatMap((user) => {
     let userServers = Object.values({
-      "": user.server,
+      "": user.server || {},
       ...(user.servers || {}),
     });
     return userServers.map((server) => [user, server]);