Fix error when user setting is null

src/app/models/user.ts

@@ -41,11 +41,13 @@ export class User {
     this.joinedAt = userDataResponse.joinedAt;
     this.friendCount = userDataResponse.friendCount;
     this.groupCount = userDataResponse.groupCount;
+    if (userDataResponse.settings) {
       try {
         this.darkmode = !!JSON.parse(userDataResponse.settings).darkmode;
       } catch (err) {
         console.error(err);
       }
+    }
     if (userDataResponse.friends) {
       this.friends = userDataResponse.friends
         .map(friend => new FriendInfo(