Can an external etcd cluster be used to install dashboard using helm？

I use command
`helm install apisix apisix/apisix \
--set ingress-controller.enabled=true \
--set dashboard.enabled=true \
--set etcd.enabled=false \
--set etcd.host={http://192.168.252.184:2379\,http://192.168.252.106:2379} \
--set admin.allow.ipList="" \
--namespace ingress-apisix`
to install them.
apisix and apisix-controller is installed successfully，but dashboard is failed. The error logs is
How can I solved it ?

Start with the supplied Helm installation command and the linked dashboard error screenshot, then inspect how the chart handles an external etcd cluster when etcd.enabled is false. Confirm the dashboard installs successfully with the external endpoints, and document the required configuration or limitation.

Written by the indexing model from the issue text.