Who Me Too'd this topic

I followed the instruction to setup basic harness based on below url.

https://pubhub.devnetcloud.com/media/pyats-packages/docs/genie/userguide/harness/user/gettingstarted.html?highlight=grun

The job file (harness1.py) is as below

import os
from genie.harness.main import gRun


def main():
    test_path = os.path.dirname(os.path.abspath(__file__))
    gRun(mapping_datafile=os.path.join(test_path, 'mapping.yaml'))

The mapping.yaml file is as below

devices:
  uut:
    context: cli
    label: uut
    mapping:
      cli: vty

The testbed file(testbed_csrv.yaml) is as below

testbed:

  name: GenieTest

  tacacs:
    username: cisco
  passwords:
    tacacs: cisco
    enable: cisco
    line: cisco

devices:
  R1:
    alias: 'uut'
    os: 'iosxe'
    type: 'CSR1000v'
    connections:
      defaults:
        class: 'unicon.Unicon'
      vty:
        protocol: ssh
        ip: 172.16.100.130
        port: 22

When I run easypy harness1.py --testbed_file testbed_csrv.yaml, I got below error message

Caught error while executing the test script:
2019-08-19T20:58:32: %GENIE-ERROR: Traceback (most recent call last):
2019-08-19T20:58:32: %GENIE-ERROR: File "src/genie/harness/main.py", line 379, in genie.harness.main.Genie.run
2019-08-19T20:58:32: %GENIE-ERROR: File "src/genie/harness/script.py", line 163, in genie.harness.script.TestScript.organize_testbed
2019-08-19T20:58:32: %GENIE-ERROR: File "src/genie/conf/main.py", line 73, in genie.conf.main.Genie.init
2019-08-19T20:58:32: %GENIE-ERROR: TypeError: Argument should be a pyATS Testbed object but received object of type <class 'NoneType'>

I cannot figure out why the argument received as NoneType object.

Also when edit the harness1.py, pycharm displayed errors for the import.

Unresolved reference 'gRun' and Cannot find reference 'main' in '_init_.py'.

Are they potentially the cause for the testbed object issue?

Thank you in advance.