Error: "not enough values to unpack" when adding app permission

[asanjabi]

This is autogenerated. Please review and update as needed.

Describe the bug

Command Name
az ad app permission add

Errors:

The command failed with an unexpected error. Here is the traceback:
not enough values to unpack (expected 2, got 1)
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 712, in _run_job
    return cmd_copy.exception_handler(ex)
  File "/opt/az/lib/python3.6/site-packages/azure/cli/command_modules/role/commands.py", line 69, in graph_err_handler
    raise ex
  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/role/custom.py", line 921, in add_permission
    access_id, access_type = e.split('=')
ValueError: not enough values to unpack (expected 2, got 1)

To Reproduce:

Steps to reproduce the behavior. Note that argument values have been redacted, as they may contain sensitive information.

• Put any pre-requisite steps here...
• az ad app permission add --id {} --api {} --api-permissions {} --debug
  parameters used:
• id: appId of the application I want to give permission to
• api: appId of the application that has the permission
• api-permissions: id of oauth2Permissions from the api application

I am a global admin in this AAD

Expected Behavior

Add the permission to the app

Environment Summary

This was ran in Azure Cloud Shell

Linux-5.4.0-1048-azure-x86_64-with-debian-10.2 (Cloud Shell)
Python 3.6.10
Installer: DEB

azure-cli 2.24.2

Extensions:
ai-examples 0.2.5
ssh 0.1.5

Additional Context

[yonzhan]

@jiasli for awareness