Split thread list into chunks to save memory

db.py

@@ -53,6 +53,8 @@ def store_message_bulk(data):
     :param msg: dict
     """
     print("BULK", len(data))
+    if not data:
+        return
     split_posts = array_split(data, ceil(len(data) / 10000))
     for messages in split_posts:
         print("PROCESSING SPLIT OF", len(messages), "MESSAGES")