SPDK failing with KeyError: 'storage_protocol'

Deploying Cinder with SPDK using confs at [1] causes the cinder volumes to have the error at [2] in the cinder volume (c-vol) service, which cause the cinder to fail in creating volumes.

[1]
[DEFAULT]
cinder_internal_tenant_user_id = 5d9054f9d56849a69e12775c9121ceda
cinder_internal_tenant_project_id = 0378334ce9574263b2d3d9a4030e6747
graceful_shutdown_timeout = 5
glance_api_servers = http://10.7.12.119/image
osapi_volume_workers = 3
logging_exception_prefix = ERROR %(name)s %(instance)s
logging_default_format_string = %(color)s%(levelname)s %(name)s [-%(color)s] %(instance)s%(color)s%(message)s
logging_context_format_string = %(color)s%(levelname)s %(name)s [%(global_request_id)s %(request_id)s %(project_name)s %(user_name)s%(color)s] %(instance)s%(color)s%(message)s
logging_debug_format_suffix = {{(pid=%(process)d) %(funcName)s %(pathname)s:%(lineno)d}}
transport_url = rabbit://stackrabbit:password@10.7.12.119:5672/
enabled_backends = spdk-1,spdk-2
my_ip = 10.7.12.119
state_path = /opt/stack/data/cinder
osapi_volume_listen = 0.0.0.0
osapi_volume_extension = cinder.api.contrib.standard_extensions
rootwrap_config = /etc/cinder/rootwrap.conf
api_paste_config = /etc/cinder/api-paste.ini
target_helper = spdk-nvmeof
debug = True

[spdk-1]
spdk_rpc_ip = localhost
spdk_rpc_port = 8000
spdk_rpc_username = user
spdk_rpc_password = password
target_ip_address = 1.1.1.1
target_port = 4260
target_protocol = nvmet_rdma
target_helper = spdk-nvmeof
target_prefix = nqn.2014-08.org.spdk
volume_driver = cinder.volume.drivers.spdk.SPDKDriver
volume_backend_name = SPDK

[2]
Sep 23 09:42:30 cinder-volume[1126869]: DEBUG cinder.volume.drivers.spdk [None req-3363ec01-afc8-40da-b0f4-603389384810 None None] SPDK lvs name: lvs, total space: 260.5703125, free space: 260.5703125 {{(pid=1126869) _update_volume_stats /opt/stack/cinder/cinder/volume/drivers/spdk.py:126}}
Sep 23 09:42:30 cinder-volume[1126869]: INFO cinder.volume.manager [None req-3363ec01-afc8-40da-b0f4-603389384810 None None] Abd1: volume_stats: {'pools': [{'volume_backend_name': 'SPDK', 'vendor_name': 'Open Source', 'driver_version': '1.0.0', 'storage_protocol': 'NVMe-oF', 'total_capacity_gb': 260.5703125, 'free_capacity_gb': 260.5703125, 'pool_name': 'lvs', 'allocated_capacity_gb': 0}]}
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service [None req-3363ec01-afc8-40da-b0f4-603389384810 None None] Error starting thread.: KeyError: 'storage_protocol'
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service Traceback (most recent call last):
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service File "/usr/local/lib/python3.8/dist-packages/oslo_service/service.py", line 807, in run_service
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service service.start()
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service File "/opt/stack/cinder/cinder/service.py", line 228, in start
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service self.manager.init_host(added_to_cluster=self.added_to_cluster,
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service File "/opt/stack/cinder/cinder/volume/manager.py", line 443, in init_host
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service self._init_host(added_to_cluster, **kwargs)
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service File "/opt/stack/cinder/cinder/volume/manager.py", line 574, in _init_host
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service self.publish_service_capabilities(ctxt)
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service File "/opt/stack/cinder/cinder/volume/manager.py", line 2694, in publish_service_capabilities
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service self._report_driver_status(context)
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service File "/opt/stack/cinder/cinder/volume/manager.py", line 2631, in _report_driver_status
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service if volume_stats['storage_protocol'] in [
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service KeyError: 'storage_protocol'
Sep 23 09:42:30 cinder-volume[1126869]: ERROR oslo_service.service