Could not reproduce with latest master, curl did not throw 500.

stack@devstack-amit:~$ openstack server list -f json --long -c Name -c 'Task State' -c Status
[
  {
    "Name": "vm3",
    "Status": "ERROR",
    "Task State": null
  },
  {
    "Name": "vm2",
    "Status": "ACTIVE",
    "Task State": null
  },
  {
    "Name": "vm1",
    "Status": "ERROR",
    "Task State": null
  }
]

================================================

stack@devstack-amit:~$ curl -k -H "x-auth-token: $TT" 'http://10.0.108.24/compute/v2.1/servers/detail?sort_key=task_state' 
{"servers": [

{"id": "0ed7bcf3-0419-49b8-8710-dd9306c23977", "name": "vm2", "status": "ACTIVE", 

"tenant_id": "44b9b5d2e2994bc8ae77c4aaebf4fc6e", "user_id": "eb09a73c253449fb819fbca70e7686c9", "metadata": {}, "hostId": "029f5e1d2b3b3fec2c2cbb8b7a72302dc04e64e450ed1df802372115", "image": {"id": "dd7e27dc-43ce-48b8-beb0-5438bff59644", "links": [{"rel": "bookmark", "href": "http://10.0.108.24/compute/images/dd7e27dc-43ce-48b8-beb0-5438bff59644"}]}, "flavor": {"id": "3", "links": [{"rel": "bookmark", "href": "http://10.0.108.24/compute/flavors/3"}]}, "created": "2022-12-02T06:58:24Z", "updated": "2022-12-02T06:58:29Z", "addresses": {"public": [{"version": 4, "addr": "172.24.4.48", "OS-EXT-IPS:type": "fixed", "OS-EXT-IPS-MAC:mac_addr": "fa:16:3e:cc:f7:9d"}, {"version": 6, "addr": "2001:db8::38d", "OS-EXT-IPS:type": "fixed", "OS-EXT-IPS-MAC:mac_addr": "fa:16:3e:cc:f7:9d"}]}, "accessIPv4": "", "accessIPv6": "", "links": [{"rel": "self", "href": "http://10.0.108.24/compute/v2.1/servers/0ed7bcf3-0419-49b8-8710-dd9306c23977"}, {"rel": "bookmark", "href": "http://10.0.108.24/compute/servers/0ed7bcf3-0419-49b8-8710-dd9306c23977"}], "OS-DCF:diskConfig": "MANUAL", "progress": 0, "OS-EXT-AZ:availability_zone": "nova", "config_drive": "", "key_name": null, "OS-SRV-USG:launched_at": "2022-12-02T06:58:28.000000", "OS-SRV-USG:terminated_at": null, "OS-EXT-SRV-ATTR:host": "devstack-amit", "OS-EXT-SRV-ATTR:instance_name": "instance-0000000a", "OS-EXT-SRV-ATTR:hypervisor_hostname": "devstack-amit", "OS-EXT-STS:task_state": null, "OS-EXT-STS:vm_state": "active", "OS-EXT-STS:power_state": 1, "os-extended-volumes:volumes_attached": [], "security_groups": [{"name": "default"}]}, 

{"id": "166cda20-b609-4cdf-96cd-1c2e029aa080", "name": "vm1", "status": "ERROR", 

"tenant_id": "44b9b5d2e2994bc8ae77c4aaebf4fc6e", "user_id": "eb09a73c253449fb819fbca70e7686c9", "metadata": {}, "hostId": "029f5e1d2b3b3fec2c2cbb8b7a72302dc04e64e450ed1df802372115", "image": {"id": "dd7e27dc-43ce-48b8-beb0-5438bff59644", "links": [{"rel": "bookmark", "href": "http://10.0.108.24/compute/images/dd7e27dc-43ce-48b8-beb0-5438bff59644"}]}, "flavor": {"id": "1", "links": [{"rel": "bookmark", "href": "http://10.0.108.24/compute/flavors/1"}]}, "created": "2022-12-01T07:51:25Z", "updated": "2022-12-02T08:46:07Z", "addresses": {"public": [{"version": 4, "addr": "172.24.4.89", "OS-EXT-IPS:type": "fixed", "OS-EXT-IPS-MAC:mac_addr": "fa:16:3e:9e:f8:8d"}, {"version": 6, "addr": "2001:db8::2a", "OS-EXT-IPS:type": "fixed", "OS-EXT-IPS-MAC:mac_addr": "fa:16:3e:9e:f8:8d"}]}, "accessIPv4": "", "accessIPv6": "", "links": [{"rel": "self", "href": "http://10.0.108.24/compute/v2.1/servers/166cda20-b609-4cdf-96cd-1c2e029aa080"}, {"rel": "bookmark", "href": "http://10.0.108.24/compute/servers/166cda20-b609-4cdf-96cd-1c2e029aa080"}], "OS-DCF:diskConfig": "MANUAL", "OS-EXT-AZ:availability_zone": "nova", "config_drive": "", "key_name": null, "OS-SRV-USG:launched_at": "2022-12-01T07:51:31.000000", "OS-SRV-USG:terminated_at": null, "OS-EXT-SRV-ATTR:host": "devstack-amit", "OS-EXT-SRV-ATTR:instance_name": "instance-00000009", "OS-EXT-SRV-ATTR:hypervisor_hostname": "devstack-amit", "OS-EXT-STS:task_state": null, "OS-EXT-STS:vm_state": "error", "OS-EXT-STS:power_state": 1, "os-extended-volumes:volumes_attached": [], "security_groups": [{"name": "default"}]}, 

{"id": "f2bb9811-3e82-47e7-91c8-54230f7fc6de", "name": "vm3", "status": "ERROR", 

"tenant_id": "44b9b5d2e2994bc8ae77c4aaebf4fc6e", "user_id": "eb09a73c253449fb819fbca70e7686c9", "metadata": {}, "hostId": "029f5e1d2b3b3fec2c2cbb8b7a72302dc04e64e450ed1df802372115", "image": {"id": "dd7e27dc-43ce-48b8-beb0-5438bff59644", "links": [{"rel": "bookmark", "href": "http://10.0.108.24/compute/images/dd7e27dc-43ce-48b8-beb0-5438bff59644"}]}, "flavor": {"id": "3", "links": [{"rel": "bookmark", "href": "http://10.0.108.24/compute/flavors/3"}]}, "created": "2022-12-02T09:22:13Z", "updated": "2022-12-02T09:22:23Z", "addresses": {"public": [{"version": 4, "addr": "172.24.4.135", "OS-EXT-IPS:type": "fixed", "OS-EXT-IPS-MAC:mac_addr": "fa:16:3e:86:06:89"}, {"version": 6, "addr": "2001:db8::3cb", "OS-EXT-IPS:type": "fixed", "OS-EXT-IPS-MAC:mac_addr": "fa:16:3e:86:06:89"}]}, "accessIPv4": "", "accessIPv6": "", "links": [{"rel": "self", "href": "http://10.0.108.24/compute/v2.1/servers/f2bb9811-3e82-47e7-91c8-54230f7fc6de"}, {"rel": "bookmark", "href": "http://10.0.108.24/compute/servers/f2bb9811-3e82-47e7-91c8-54230f7fc6de"}], "OS-DCF:diskConfig": "MANUAL", "OS-EXT-AZ:availability_zone": "nova", "config_drive": "", "key_name": null, "OS-SRV-USG:launched_at": "2022-12-02T09:22:17.000000", "OS-SRV-USG:terminated_at": null, "OS-EXT-SRV-ATTR:host": "devstack-amit", "OS-EXT-SRV-ATTR:instance_name": "instance-0000000b", "OS-EXT-SRV-ATTR:hypervisor_hostname": "devstack-amit", "OS-EXT-STS:task_state": null, "OS-EXT-STS:vm_state": "error", "OS-EXT-STS:power_state": 1, "os-extended-volumes:volumes_attached": [], "security_groups": [{"name": "default"}]}]}