Fixed exporting weights for users that left the server

and reduced debug output

essentials/messagecache.py

@@ -1,5 +1,8 @@
+import logging
 import discord
 
+logger = logging.getLogger('bot')
+
 
 class MessageCache:
     def __init__(self, _bot):
@@ -8,7 +11,8 @@ class MessageCache:
 
     def put(self, key, value: discord.Message):
         self._cache_dict[key] = value
-        print("cache size:", self._cache_dict.__len__())
+        if self._cache_dict.__len__() % 5 == 0:
+            logger.info("cache size:", self._cache_dict.__len__())
 
     def get(self, key):
         # Try to find it in this cache, then see if it is cached in the bots own message cache