How to fix Multi-Attach error for volume: volume is already exclusively attached to one node and can't be attached to another in Kubernetes

kubectl get pvc -n <namespace> -o wide
kubectl describe pvc <pvc-name> -n <namespace>

kubectl get pods -n <namespace> -o wide
kubectl describe pod <pod-name> -n <namespace>

kubectl patch pvc <pvc-name> -n <namespace> -p '{"spec":{"accessModes":["ReadWriteMany"]}}' --type=merge

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: my-pvc
spec:
  accessModes:
    - ReadWriteMany  # Changed from ReadWriteOnce
  storageClassName: nfs-storage
  resources:
    requests:
      storage: 10Gi

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: my-app
spec:
  serviceName: my-app
  replicas: 1  # Only one pod can use RWO volume
  selector:
    matchLabels:
      app: my-app
  template:
    metadata:
      labels:
        app: my-app
    spec:
      containers:
      - name: app
        image: my-image:latest
        volumeMounts:
        - name: data
          mountPath: /data
  volumeClaimTemplates:
  - metadata:
      name: data
    spec:
      accessModes: [ "ReadWriteOnce" ]
      storageClassName: standard
      resources:
        requests:
          storage: 10Gi

# StatefulSet with volumeClaimTemplates creates one PVC per pod
# Pod 0 gets pvc data-0
# Pod 1 gets pvc data-1
# etc.
volumeClaimTemplates:
- metadata:
    name: data
  spec:
    accessModes: [ "ReadWriteOnce" ]
    storageClassName: standard
    resources:
      requests:
        storage: 10Gi

apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: ebs-gp2
provisioner: ebs.csi.aws.com
volumeBindingMode: WaitForFirstConsumer
allowedTopologies:
- matchLabelExpressions:
  - key: topology.kubernetes.io/zone
    values:
    - us-east-1a
    - us-east-1b
parameters:
  type: gp2
  iops: "100"

kubectl get pvc,pod -n <namespace>
kubectl describe pvc <pvc-name> -n <namespace>
kubectl describe pod <pod-name> -n <namespace>

kubectl logs <pod-name> -n <namespace>
kubectl events --for pod/<pod-name> -n <namespace>