checkbox-cli remote can't execute test plan

After installing checkbox-ng(1.16.0+git202203211652+pkg182~ubuntu20.04.1), checkbox-cli remote will execute fail by the following error.

[traceback]

15:51:15 Traceback (most recent call last):
15:51:15 File "/home/****/nas/workspace/sanity-3-testflinger-dummy-202203-30054-staging/env/bin/checkbox-cli", line 36, in <module>
15:51:15 sys.exit(load_entry_point('checkbox-ng==1.10.0.dev0', 'console_scripts', 'checkbox-cli')())
15:51:15 File "/home/****/nas/workspace/sanity-3-testflinger-dummy-202203-30054-staging/env/lib/python3.6/site-packages/checkbox_ng-1.10.0.dev0-py3.6.egg/checkbox_ng/launcher/checkbox_cli.py", line 123, in main
15:51:15 subcmd.invoked(ctx)
15:51:15 File "/home/****/nas/workspace/sanity-3-testflinger-dummy-202203-30054-staging/env/lib/python3.6/site-packages/checkbox_ng-1.10.0.dev0-py3.6.egg/checkbox_ng/launcher/master.py", line 155, in invoked
15:51:15 self.connect_and_run(ctx.args.host, port)
15:51:15 File "/home/****/nas/workspace/sanity-3-testflinger-dummy-202203-30054-staging/env/lib/python3.6/site-packages/checkbox_ng-1.10.0.dev0-py3.6.egg/checkbox_ng/launcher/master.py", line 231, in connect_and_run
15:51:15 }[state]()
15:51:15 File "/home/****/nas/workspace/sanity-3-testflinger-dummy-202203-30054-staging/env/lib/python3.6/site-packages/checkbox_ng-1.10.0.dev0-py3.6.egg/checkbox_ng/launcher/master.py", line 269, in new_session
15:51:15 tps = self.sa.start_session(configuration)
15:51:15 File "/home/****/nas/workspace/sanity-3-testflinger-dummy-202203-30054-staging/env/lib/python3.6/site-packages/checkbox_ng-1.10.0.dev0-py3.6.egg/plainbox/vendor/rpyc/core/netref.py", line 253, in __call__
15:51:15 return syncreq(_self, consts.HANDLE_CALL, args, kwargs)
15:51:15 File "/home/****/nas/workspace/sanity-3-testflinger-dummy-202203-30054-staging/env/lib/python3.6/site-packages/checkbox_ng-1.10.0.dev0-py3.6.egg/plainbox/vendor/rpyc/core/netref.py", line 76, in syncreq
15:51:15 return conn.sync_request(handler, proxy, *args)
15:51:15 File "/home/****/nas/workspace/sanity-3-testflinger-dummy-202203-30054-staging/env/lib/python3.6/site-packages/checkbox_ng-1.10.0.dev0-py3.6.egg/plainbox/vendor/rpyc/core/protocol.py", line 469, in sync_request
15:51:15 return self.async_request(handler, *args, timeout=timeout).value
15:51:15 File "/home/****/nas/workspace/sanity-3-testflinger-dummy-202203-30054-staging/env/lib/python3.6/site-packages/checkbox_ng-1.10.0.dev0-py3.6.egg/plainbox/vendor/rpyc/core/async_.py", line 102, in value
15:51:15 raise self._obj
15:51:15 UnboundLocalError: local variable 'session_type' referenced before assignment
15:51:15
15:51:15 ========= Remote Traceback (1) =========
15:51:15 Traceback (most recent call last):
15:51:15 File "/usr/lib/python3/dist-packages/plainbox/vendor/rpyc/core/protocol.py", line 320, in _dispatch_request
15:51:15 res = self._HANDLERS[handler](self, *args)
15:51:15 File "/usr/lib/python3/dist-packages/plainbox/vendor/rpyc/core/protocol.py", line 593, in _handle_call
15:51:15 return obj(*args, **dict(kwargs))
15:51:15 File "/usr/lib/python3/dist-packages/plainbox/impl/session/remote_assistant.py", line 193, in fun
15:51:15 return f(self, *args)
15:51:15 File "/usr/lib/python3/dist-packages/plainbox/impl/session/remote_assistant.py", line 303, in start_session
15:51:15 self._sa.configure_application_restart(self._cmd_callback)
15:51:15 File "/usr/lib/python3/dist-packages/plainbox/impl/decorators.py", line 142, in wrapper
15:51:15 raise exc
15:51:15 File "/usr/lib/python3/dist-packages/plainbox/impl/decorators.py", line 136, in wrapper
15:51:15 return func(*args, **kwargs)
15:51:15 File "/usr/lib/python3/dist-packages/plainbox/impl/session/assistant.py", line 248, in configure_application_restart
15:51:15 self._restart_strategy = detect_restart_strategy(self)
15:51:15 File "/usr/lib/python3/dist-packages/plainbox/impl/session/restart.py", line 273, in detect_restart_strategy
15:51:15 if session_type == "checkbox-slave":
15:51:15 UnboundLocalError: local variable 'session_type' referenced before assignment