Bad network format: missing 'uuid'

[zhangss]

https://docs.openstack.org/trove/latest/user/create-db.html

...
openstack database instance create mysql_instance_1 \
    --flavor 6 \
    --size 5 \
    --nic net-id=8799cf10-01ef-40e2-b04e-06da7cfa5668 \
    --databases test --users userA:password \
    --datastore mysql --datastore_version 5.7 \
    --is-public \
    --allowed-cidr 10.1.0.1/24 \
    --allowed-cidr 202.37.199.1/24
...

Report one fault "Failed to create server for instance 97bd5e8f-1da7-499a-baaf-85bf185b7dce Bad network format: missing 'uuid'".