Gateway fails to load subsystems upon nvmeof service restart

[caroav]

ceph-nvmeof setup with a subsystem and nearly 150 namespaces and able to see them with get_subsystems command.

Upon nvmeof service restart, restart is successful but GW is unable to load all configured targets(subsystem and namespaces)though OMAP holds all entries and updates and get_subsystems lists none

Version-Release number of selected component (if applicable):
ceph version 18.0.0-6175-g38f11f28 (38f11f28b05bfd80aaf2644cc1660ef8b51dd272) reef (dev)

How reproducible:
always

Steps to Reproduce:

1. Deploy NVMeOF GW on ceph cluster and scale its entities - 1 subsystem and nearly 150 namespaces
2. Restart nvmeof service - "ceph orch restart nvmeof.rbd"
3. Upon get_subsystems, no entities are listed

Actual results:
GW fails to load OMAP entries upon a restart

Expected results:
GW should load OMAP entries correctly upon a restart

[caroav]

INFO:control.grpc:Received request to create bdev U7U9-bdev243 from rbd/U7U9-image243 with block size 4096
INFO:control.grpc:create_bdev: []
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib64/python3.9/threading.py", line 980, in _bootstrap_inner
self.run()
File "/usr/lib64/python3.9/threading.py", line 917, in run
self._target(*self._args, **self._kwargs)
File "/remote-source/ceph-nvmeof/app/control/state.py", line 420, in _update_caller
self.update()
File "/remote-source/ceph-nvmeof/app/control/state.py", line 465, in update
self._update_call_rpc(grouped_added, True, prefix_list)
File "/remote-source/ceph-nvmeof/app/control/state.py", line 487, in _update_call_rpc
self.gateway_rpc_caller(component_update, True)
File "/remote-source/ceph-nvmeof/app/control/server.py", line 297, in gateway_rpc_caller
self.gateway_rpc.create_bdev(req)
File "/remote-source/ceph-nvmeof/app/control/grpc.py", line 128, in create_bdev
return pb2.bdev(bdev_name=bdev_name, status=True)
TypeError: bad argument type for built-in operation
[2023-10-04 10:42:15.478168] bdev_rbd.c:1199:bdev_rbd_create: NOTICE: Add U7U9-bdev243 rbd disk to lun
INFO:control.grpc:get_subsystems: U7U9-bdev243
INFO:control.grpc:Received request to get subsystems
INFO:control.grpc:get_subsystems: []
INFO:control.grpc:Received request to get subsystems
INFO:control.grpc:get_subsystems: []
INFO:control.grpc:Received request to get subsystems
INFO:control.grpc:get_subsystems: []
INFO:control.grpc:Received request to get subsystems
INFO:control.grpc:get_subsystems: []
Stopping Ceph nvmeof.rbd.ceph-nvmf3-hrhd31-node5.begrve for 33fddd3a-626e-11ee-8bcb-fa163e0c7e19...