debug not available to xmlapi client

[kirillmuravyev]

Describe the bug

I am doing a simple operational state command query from the documentation:

from panos import firewall

fw = firewall.Firewall('', '', '')
response = fw.op('debug log-receiver statistics')

Expected behavior

Should receive the result of the command

Current behavior

Traceback (most recent call last):
  File "C:\Users\muravkir\Git projects\PANPython\venv\lib\site-packages\panos\base.py", line 3878, in method
    super_method(self, *args, **kwargs)
  File "C:\Users\muravkir\Git projects\PANPython\venv\lib\site-packages\pan\xapi.py", line 951, in op
    self.__type_op(cmd, vsys, extra_qs)
  File "C:\Users\muravkir\Git projects\PANPython\venv\lib\site-packages\pan\xapi.py", line 974, in __type_op
    raise PanXapiError(self.status_detail)
pan.xapi.PanXapiError:  debug not available to xmlapi client

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "c:\Users\muravkir\Git projects\PANPython\operational_commands.py", line 4, in <module>
    response = fw.op('debug log-receiver statistics', xml=False)
  File "C:\Users\muravkir\Git projects\PANPython\venv\lib\site-packages\panos\firewall.py", line 242, in op
    return super(Firewall, self).op(
  File "C:\Users\muravkir\Git projects\PANPython\venv\lib\site-packages\panos\base.py", line 4047, in op
    element = self.xapi.op(cmd, vsys, False, extra_qs, retry_on_peer=retry_on_peer)
  File "C:\Users\muravkir\Git projects\PANPython\venv\lib\site-packages\panos\base.py", line 3899, in method
    raise the_exception

Possible solution

Steps to reproduce

1. firewall 9 or 10 version
2. perform "debug log-receiver statistics" op command from script

Screenshots

Context

Your Environment

• Version used:
• Environment name and version (e.g. Chrome 59, node.js 5.4, python 3.7.3):
• Operating System and version (desktop or mobile):
• Link to your project:

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