Installing Cloudnative pg

[InassBelgcir]

Hello !

I'm having troubles installing cloudnative pg in order to install project-origin-wallet

running the command :

helm repo add cnpg https://cloudnative-pg.github.io/charts
helm upgrade --install cnpg
--namespace cnpg-system
--create-namespace
cnpg/cloudnative-pg

results in errors "rendered manifests contain a resource that already exists"

Could someone provide assistance?