issue while enabling monitoring backend

[hrishabh05]

I have installed Opni version 0.12 on rancher 2.8.2 on local cluster, I am trying to enable Opni monitoring backend.
i have selected storage type as "filesystem" because i want use it for testing and demo purpose, then in the next i have put the grafana host name as "grafana" and i selected preset as "All in one"
then i m getting this error "ReferenceError:structuredClone is not defined"