Why am I getting this Python error in splunkd.log?

[minliang]

I am getting strange python error in splunkd log. not sure what to make of it.

02-14-2018 11:33:14.041 -0500 ERROR loader -   File "E:\Splunk\Python-2.7\Lib\site-packages\splunk\clilib\cli.py", line 17, in 
02-14-2018 11:33:14.041 -0500 ERROR loader -     import splunk.clilib.cli_common as comm
02-14-2018 11:33:14.041 -0500 ERROR loader -   File "E:\Splunk\Python-2.7\Lib\site-packages\splunk\clilib\cli_common.py", line 8, in 
02-14-2018 11:33:14.041 -0500 ERROR loader -     import httplib, shutil
02-14-2018 11:33:14.041 -0500 ERROR loader -   File "E:\Splunk\Python-2.7\Lib\httplib.py", line 255, in 
02-14-2018 11:33:14.041 -0500 ERROR loader -     class HTTPMessage(mimetools.Message):
02-14-2018 11:33:14.041 -0500 ERROR loader - AttributeError: 'module' object has no attribute 'Message'
02-14-2018 11:33:14.041 -0500 ERROR loader - <<<<< EOF (pre-flight-checks)

[minliang]

My python version 2.7 and Splunk version 6.5.3