Crash in setting up the global-workflow experiment

What is wrong?

My script can successfully setup the g-w experiment previously. But recently, the script crashed with the error messages below:

...........................................................
Source configs with RUN=gdas
Traceback (most recent call last):
  File "/scratch1/NCEPDEV/global/Jiarui.Dong/JEDI/GlobalWorkflow/global-workflow.snowtest9/workflow/create_experiment.py", line 108, in <module>
    setup_xml.main(setup_xml_args)
  File "/scratch1/NCEPDEV/global/Jiarui.Dong/JEDI/GlobalWorkflow/global-workflow.snowtest9/workflow/setup_xml.py", line 73, in main
    xml = rocoto_xml_factory.create(f'{net}_{mode}', app_config, rocoto_param_dict)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/scratch1/NCEPDEV/global/Jiarui.Dong/JEDI/GlobalWorkflow/global-workflow.snowtest9/workflow/wxflow/factory.py", line 71, in create
    return self._builders[key](*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/scratch1/NCEPDEV/global/Jiarui.Dong/JEDI/GlobalWorkflow/global-workflow.snowtest9/workflow/rocoto/gfs_cycled_xml.py", line 12, in __init__
    super().__init__(app_config, rocoto_config)
  File "/scratch1/NCEPDEV/global/Jiarui.Dong/JEDI/GlobalWorkflow/global-workflow.snowtest9/workflow/rocoto/workflow_xml.py", line 27, in __init__
    task_list = get_wf_tasks(app_config)
                ^^^^^^^^^^^^^^^^^^^^^^^^
  File "/scratch1/NCEPDEV/global/Jiarui.Dong/JEDI/GlobalWorkflow/global-workflow.snowtest9/workflow/rocoto/workflow_tasks.py", line 19, in get_wf_tasks
    task_obj = tasks_factory.create(app_config.net, app_config, run)  # create Task object based on run
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/scratch1/NCEPDEV/global/Jiarui.Dong/JEDI/GlobalWorkflow/global-workflow.snowtest9/workflow/wxflow/factory.py", line 71, in create
    return self._builders[key](*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/scratch1/NCEPDEV/global/Jiarui.Dong/JEDI/GlobalWorkflow/global-workflow.snowtest9/workflow/rocoto/gfs_tasks.py", line 11, in __init__
    super().__init__(app_config, run)
  File "/scratch1/NCEPDEV/global/Jiarui.Dong/JEDI/GlobalWorkflow/global-workflow.snowtest9/workflow/rocoto/tasks.py", line 53, in __init__
    self.HOMEgfs = self._base['HOMEgfs']
                   ~~~~~~~~~~^^^^^^^^^^^
  File "/scratch1/NCEPDEV/global/Jiarui.Dong/JEDI/GlobalWorkflow/global-workflow.snowtest9/workflow/wxflow/attrdict.py", line 82, in __missing__
    if object.__getattribute__(self, '__frozen'):
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'AttrDict' object has no attribute '__frozen'

What should have happened?

The script crashed and setup failed.

What machines are impacted?

Hera

Steps to reproduce

Run the script on hera: /scratch1/NCEPDEV/global/Jiarui.Dong/JEDI/GlobalWorkflow/tools/setup_exp_fail.sh

Additional information

Do you have a proposed solution?

Thanks @RussTreadon-NOAA for his suggestion. As suggested, when I changed from "export HOMEgfs=" to "HOMEgfs=", it successfully built the g-w experiment. I open this issue to alert this behavior.

NOAA-EMC / global-workflow