fix(aurora): don't JSON serialize the Red class

aurora/utilities/json.py

@@ -1,6 +1,9 @@
 import json
 from datetime import datetime, timedelta
 
+from redbot.core.bot import Red
+
+
 from aurora.models import AuroraBaseModel
 
 
@@ -12,6 +15,8 @@ class JSONEncoder(json.JSONEncoder):
             return str(o)
         if isinstance(o, AuroraBaseModel):
             return o.to_json()
+        if isinstance(o, Red):
+            return None
         return super().default(o)