After updating my add-on to 4.1.2 I am getting this error during certification:
Detected an outdated version of the Splunk SDK for Python (1.6.6). Please upgrade to version 1.6.16 or later. File: bin/add-on/aob_py3/solnlib/packages/splunklib/binding.py
My work around:
Manually update splunklib to the latest version by downloading the latest version of the Splunk SDK.
SDK: https://github.com/splunk/splunk-sdk-python/
Extract and copy the splunklib directory to ../aob_py3/solnlib/packages/splunklib