Is this bug resolved? I rencounter same bug. I reported to story.openstack.org, but nobody reply.
https://storyboard.openstack.org/#!/story/2009022

CloudKitty did not display price while creating instance, and trigger ERROR info under Start Command

CloudKitty Version:commit 35ce237b763407e7844545d5e2531c6dc0f15998 (HEAD -> master, origin/master, origin/HEAD) Author: Rafael Weingärtner <email address hidden> Date: Tue Jun 22 09:48:13 2021 -0300

Steps to reproduce:

Using DevStack installed OpenStack with CloudKitty and Ceilometer releated compont
Using Dashboard enabled CloudKitty hashmap module
Using Dashboard defined the cost of instance, contains flavor_id field.
Run "cloudkitty-processor --config-file /etc/cloudkitty/cloudkitty.conf"
Using Dashboard create and luanch instance, repeatedly click "Price"/"Flavor"/"Networks"
Result in command line:

2021-07-01 10:54:46.883 17862 DEBUG cloudkitty.orchestrator [-] Received quote from RPC. quote /opt/stack/cloudkitty/cloudkitty/orchestrator.py:118
2021-07-01 10:54:46.883 17862 DEBUG cloudkitty.orchestrator [-] Chris Received Data3:[{'usage': {'instance': [{'desc': {'flavor_name': 'cirros256', 'flavor_id': 'c1', 'vcpus': 1, 'disk': 1, 'ephemeral': 0, 'disk_total': 1, 'disk_total_display': 1, 'ram': 256, 'source_type': 'image', 'source_val': '47cdc39d-935b-44c6-8810-8688e5b0b1b2', 'image_id': '47cdc39d-935b-44c6-8810-8688e5b0b1b2'}, 'vol': {'qty': '1', 'unit': 'undef'}}]}}] quote /opt/stack/cloudkitty/cloudkitty/orchestrator.py:119
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server [-] Exception during message handling: AttributeError: 'list' object has no attribute 'start'
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server Traceback (most recent call last):
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server File "/usr/local/lib/python3.8/dist-packages/oslo_messaging/rpc/server.py", line 165, in _process_incoming
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server res = self.dispatcher.dispatch(message)
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server File "/usr/local/lib/python3.8/dist-packages/oslo_messaging/rpc/dispatcher.py", line 309, in dispatch
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server return self._do_dispatch(endpoint, method, ctxt, args)
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server File "/usr/local/lib/python3.8/dist-packages/oslo_messaging/rpc/dispatcher.py", line 229, in _do_dispatch
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server result = func(ctxt, **new_args)
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server File "/opt/stack/cloudkitty/cloudkitty/orchestrator.py", line 121, in quote
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server return str(worker.quote(res_data))
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server File "/opt/stack/cloudkitty/cloudkitty/orchestrator.py", line 224, in quote
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server processor.obj.quote(res_data)
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server File "/opt/stack/cloudkitty/cloudkitty/rating/init.py", line 106, in quote
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server return self.process(data)
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server File "/opt/stack/cloudkitty/cloudkitty/rating/hash/init.py", line 262, in process
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server output = dataframe.DataFrame(start=data.start, end=data.end)
2021-07-01 10:54:47.039 17862 ERROR oslo_messaging.rpc.server AttributeError: 'list' object has no attribute 'start'

The second line of above console debug info is the Log of the debugging code I added myself，shows that there is indeed no Start property in the List.