deploy redis on okd redis.exceptions.ResponseError

Question

I am deploying redis on okd4 with below config for service and deployment:

apiVersion: v1
kind: Service


metadata:
  name: redis-service
  annotations:
    metallb.universe.tf/address-pool: vpn-access
spec:
  
  selector:
    app: redis
  ports:
    - protocol: TCP
      port: 6379
      targetPort: 6379

  type: LoadBalancer

deployment:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis
spec:
  replicas: 1
  selector:
    matchLabels:
      app: redis
  template:
    metadata:
      labels:
        app: redis
    spec:
      containers:
      - name: redis
        image: redis:latest
        ports:
        - containerPort: 6379

and I wanna write to Redis by Python but I am getting this error :

redis.exceptions.ResponseError: MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.