Fail to deploy the published functions (zip file) to my Azure function app

**Command:**
az functionapp deployment source config-zip --resource-group myResourceGroup --name myFunctionApp --src "./publish.zip"

**Error output:**
Getting scm site credentials for zip deployment
The command failed with an unexpected error. Here is the traceback:
'str' object has no attribute 'value'
Traceback (most recent call last):
File "/opt/az/lib/python3.6/site-packages/knack/cli.py", line 231, in invoke
cmd_result = self.invocation.execute(args)
File "/opt/az/lib/python3.6/site-packages/azure/cli/core/commands/__init__.py", line 657, in execute
raise ex
File "/opt/az/lib/python3.6/site-packages/azure/cli/core/commands/__init__.py", line 720, in _run_jobs_serially
results.append(self._run_job(expanded_arg, cmd_copy))
File "/opt/az/lib/python3.6/site-packages/azure/cli/core/commands/__init__.py", line 691, in _run_job
result = cmd_copy(params)
File "/opt/az/lib/python3.6/site-packages/azure/cli/core/commands/__init__.py", line 328, in __call__
return self.handler(*args, **kwargs)
File "/opt/az/lib/python3.6/site-packages/azure/cli/core/commands/command_operation.py", line 121, in handler
return op(**command_args)
File "/opt/az/lib/python3.6/site-packages/azure/cli/command_modules/appservice/custom.py", line 405, in enable_zip_deploy_functionapp
return enable_zip_deploy(cmd, resource_group_name, name, src, timeout, slot)
File "/opt/az/lib/python3.6/site-packages/azure/cli/command_modules/appservice/custom.py", line 417, in enable_zip_deploy
scm_url = _get_scm_url(cmd, resource_group_name, name, slot)
File "/opt/az/lib/python3.6/site-packages/azure/cli/command_modules/appservice/custom.py", line 1948, in _get_scm_url
webapp = show_webapp(cmd, resource_group_name, name, slot=slot)
File "/opt/az/lib/python3.6/site-packages/azure/cli/command_modules/appservice/custom.py", line 607, in show_webapp
return _show_app(cmd, resource_group_name, name, "webapp", slot)
File "/opt/az/lib/python3.6/site-packages/azure/cli/command_modules/appservice/custom.py", line 736, in _show_app
"Unable to find {} '{}', in RG '{}'".format(cmd_app_type.value, name, resource_group_name),
AttributeError: 'str' object has no attribute 'value'
To open an issue, please run: 'az feedback'

I didn't change any code in the AdtSampleApp\SampleFunctionsApp, how to fix this error? Thank you very much.

Start by reproducing the az functionapp deployment source config-zip command and review the traceback in azure/cli/command_modules/appservice/custom.py, especially enable_zip_deploy_functionapp, _get_scm_url, and show_webapp. Done means the published functions deploy to the Azure Function App without the 'str' object has no attribute 'value' error.

Written by the indexing model from the issue text.