Update networks/message_streamer.py

networks/message_streamer.py

@@ -31,7 +31,7 @@ class MessageStreamer:
 
     def parse_line(self, line):
         line = line.decode("utf-8")
-        line = re.sub(r"data:\s*", "", line)
+        line = re.sub(r"data:\s*", "", "NULL", line)
         data = json.loads(line)
         content = data["token"]["text"]
         return content