I created the Yaml (Deploy, PV, PVC, and Service) files for flowable to run on AKS. It's running and I can see the flowable browser UI. The problem is that when I start a process and the process has a form to upload the file, here I am getting an error /data/uncategorized/a6506912-816c-11ea-8c98-e20c3b5b12e4 (No such file or directory)

Here are my YAML files

Deployment:

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  annotations:
    deployment.kubernetes.io/revision: "1"
  creationTimestamp: null
  generation: 1
  labels:
    k8s-app: flowable-app
  name: flowable-app
  selfLink: /apis/extensions/v1beta1/namespaces/ingress-basic/deployments/flowable-app
spec:
  progressDeadlineSeconds: 600
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s-app: flowable-app
  strategy:
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 25%
    type: RollingUpdate
  template:
    metadata:
      creationTimestamp: null
      labels:
        k8s-app: flowable-app
      name: flowable-app
    spec:
      containers:
      - env:
        - name: FLOWABLE_CONTENT_STORAGE_ROOT-FOLDER
          value:  /data
        - name: SPRING_DATASOURCE_DRIVER-CLASS-NAME
          value: org.postgresql.Driver
        - name: SPRING_DATASOURCE_URL
          value: jdbc:postgresql://0.0.0.0:5432/flowable
        - name: SPRING_DATASOURCE_USERNAME
          value: xxxxx
        - name: SPRING_DATASOURCE_PASSWORD
          value: xxxxx
        - name: FLOWABLE_COMMON_APP_IDM-ADMIN_USER
          value: admin
        - name: FLOWABLE_COMMON_APP_IDM-ADMIN_PASSWORD
          value: test
        - name: FLOWABLE_COMMON_APP_IDM-REDIRECT-URL
          value: http://1.1.1.1:8080/flowable-idm
        - name: FLOWABLE_COMMON_APP_REDIRECT_ON_AUTH_SUCCESS
          value: http://1.1.1.1:8080/flowable-task/
        volumeMounts:
        - mountPath:  /data
          name: flowable-data
        image: xxxxx
        imagePullPolicy: Always
        name: flowable-app
        resources: {}
        securityContext:
          privileged: false
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
      volumes:
      - name: flowable-data
        persistentVolumeClaim:
          claimName: flowable-volume-claim
      dnsPolicy: ClusterFirst
      imagePullSecrets:
      - name: regcred
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 30
status: {}

PersistentVolume and PersistentVolumeClaim:

kind: PersistentVolume
apiVersion: v1
metadata:
  name: flowable-volume
  labels:
    type: local
    app: flowable-app
spec:
  storageClassName: managed-premium
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/mnt/data/flowable/data"

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: flowable-volume-claim
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: managed-premium
  resources:
    requests:
      storage: 5Gi

Service:

apiVersion: v1
kind: Service
metadata:
  creationTimestamp: null
  labels:
    k8s-app: flowable-app
  name: flowable-app
  selfLink: /api/v1/namespaces/ingress-basic/services/flowable-app
spec:
  externalTrafficPolicy: Cluster
  ports:
  - name: tcp-4000-4000-bj5xg
    nodePort: 31789
    port: 8080
    protocol: TCP
    targetPort: 8080
  selector:
    k8s-app: flowable-app
  sessionAffinity: None
  type: LoadBalancer
status:
  loadBalancer: {}