Fixed the bug crashing leaderboards from anonymous users

uqcsbot/utils/advent_utils.py

@@ -34,7 +34,7 @@ def __init__(self, id: int, name: str, local: int, star_total: int, global_: int
         # The advent of code id
         self.id = id
         # The advent of code name
-        self.name = name
+        self.name = name if name else "Anon"
         # The score of the user on the local leaderboard
         self.local = local
         # The total number of stars the user has collected