object has no attribute "slug"

[gfvh]

Performing proxmox full update happens this:

<class 'AttributeError'>

object has no attribute "slug"

Python version: 3.11.2
NetBox version: 3.7.1
Plugins:
netbox_attachments: 4.0.2
netbox_ipcalculator: 1.1
netbox_proxbox: 0.0.5
netbox_qrcode: 0.0.11
netbox_topology_views: 3.9.0

here is cat from log of exact moment

log file:

netbox_proxmox.log

cat /var/log/netbox.log

Internal Server Error: /plugins/proxbox/full_update/
Traceback (most recent call last):
File "/opt/netbox-3.7.1/venv/lib/python3.11/site-packages/django/core/handlers/exception.py", line 55, in inner
response = get_response(request)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox-3.7.1/venv/lib/python3.11/site-packages/django/core/handlers/base.py", line 197, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox-3.7.1/venv/lib/python3.11/site-packages/django/views/generic/base.py", line 104, in view
return self.dispatch(request, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox-3.7.1/venv/lib/python3.11/site-packages/django/contrib/auth/mixins.py", line 109, in dispatch
return super().dispatch(request, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox-3.7.1/venv/lib/python3.11/site-packages/django/views/generic/base.py", line 143, in dispatch
return handler(request, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox-3.7.1/venv/lib/python3.11/site-packages/netbox_proxbox/views.py", line 93, in get
"virtualmachines_table": VMUpdateResult(proxbox_api.update.all(remove_unused = True)["virtualmachines"]),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox-3.7.1/venv/lib/python3.11/site-packages/netbox_proxbox/proxbox_api/update.py", line 420, in all
cluster = create.virtualization.cluster()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox-3.7.1/venv/lib/python3.11/site-packages/netbox_proxbox/proxbox_api/create/virtualization.py", line 68, in cluster
type = cluster_type().slug
^^^^^^^^^^^^^^^^^^^
File "/opt/netbox-3.7.1/venv/lib/python3.11/site-packages/pynetbox/core/response.py", line 308, in getattr
raise AttributeError('object has no attribute "{}"'.format(k))
AttributeError: object has no attribute "slug"