Create rule template with rulestes TAG

[anoora17]

ENV:
Python 3
installed rdk with
python3 -m pip install rdk

sample of config rule
{ "Version": "1.0", "Parameters": { "RuleName": "access_keys_rotated", "SourceRuntime": null, "CodeKey": null, "InputParameters": "{}", "OptionalParameters": "{\"maxAccessKeyAge\": \"30\"}", "SourcePeriodic": "TwentyFour_Hours", "SourceIdentifier": "ACCESS_KEYS_SOMETHING", "RuleSets": [ "tagOne" ] }, "Tags": [] }

CLI used to generate template:
rdk create-rule-template --rulesets tagOne --output-file test.json --rules-only

Output:
Generating CloudFormation template!
Traceback (most recent call last):
File "/usr/local/bin/rdk", line 11, in
sys.exit(main())
File "/usr/local/lib/python3.6/site-packages/rdk/cli.py", line 21, in main
return_val = my_rdk.process_command()
File "/usr/local/lib/python3.6/site-packages/rdk/rdk.py", line 341, in process_command
exit_code = method_to_call()
File "/usr/local/lib/python3.6/site-packages/rdk/rdk.py", line 1806, in create_rule_template
tags_str += "Key={},Value={} ".format(tag['Key'], tag['Value'])]]

Any one have solution to this issue, however if I have one config rule it works but not with multiple one using Rulesets tagging.