Traefik Unable to add ACME provider

I trying to upgrade from v1.7.18 to v2.0.2 with following traefik.toml

traefik.toml
    ## static configuration
    [global]
      checkNewVersion = true

    [entryPoints]
      [entryPoints.web]
        address = ":80"
      [entryPoints.websecure]
        address = ":443"
      [entryPoints.tcp5000]
        address = ":5000"
      [entryPoints.internal]
        address = ":4080"

    [providers]
      [providers.kubernetesCRD]
      [providers.file]
        directory = "/etc/traefik/providers/"
        watch = true

    [log]
      level = "INFO"

    [accessLog]

    [api]
      insecure = true
      dashboard = true
      debug = true

    [metrics]
      [metrics.prometheus]
        buckets = [0.1,0.3,1.2,5.0]
        addEntryPointsLabels = true
        addServicesLabels = true
        entryPoint = "web"

    [ping]
      entryPoint = "web"

    [certificatesResolvers]
      [certificatesResolvers.default]
        [certificatesResolvers.default.acme]
          email = "admin@domain.com"
          caServer = "https://acme-v02.api.letsencrypt.org/directory"
          storage = "/etc/traefik/storage/acme.json"
          [certificatesResolvers.default.acme.dnsChallenge]
            provider = "route53"
            delayBeforeCheck = 0
            resolvers = ["1.1.1.1:53", "8.8.8.8:53"]

and dynamic.toml

dynamic.toml
    ## dynamic configuration
    [http.routers]
      [http.routers.redirecttohttps]
        entryPoints = ["web","websecure"]
        rule = "HostRegexp(`{host:.+}`)"
        middlewares = ["httpsredirect"]
        service = "noop"

    [http.middlewares]
      [http.middlewares.httpsredirect.redirectScheme]
        scheme = "https"

    [http.services]
      [http.services.noop]
        [http.services.noop.loadBalancer]
          [[http.services.noop.loadBalancer.servers]]
            url = "http://192.168.0.1"

But when Traefik container starts it complains about Unable to add ACME provider and non-existent resolver: default

Following are the container logs

time="2019-10-19T13:12:16Z" level=info msg="Configuration loaded from file: /etc/traefik/traefik.toml"
time="2019-10-19T13:12:16Z" level=info msg="Traefik version 2.0.2 built on 2019-10-09T19:26:05Z"
time="2019-10-19T13:12:16Z" level=info msg="\nStats collection is disabled.\nHelp us improve Traefik by turning this feature on :)\nMore details on: https://docs.traefik.io/v2.0/contributing/data-collection/\n"
time="2019-10-19T13:12:16Z" level=error msg="Unable to add ACME provider to the providers list: unable to get ACME account: json: cannot unmarshal array into Go value of type acme.StoredData"
time="2019-10-19T13:12:16Z" level=info msg="Starting provider aggregator.ProviderAggregator {}"
time="2019-10-19T13:12:16Z" level=info msg="Starting provider *file.Provider {\"directory\":\"/etc/traefik/providers/\",\"watch\":true}"
time="2019-10-19T13:12:16Z" level=info msg="Starting provider *crd.Provider {}"
time="2019-10-19T13:12:16Z" level=info msg="label selector is: \"\"" providerName=kubernetescrd
time="2019-10-19T13:12:16Z" level=info msg="Creating in-cluster Provider client" providerName=kubernetescrd
time="2019-10-19T13:12:17Z" level=error msg="the router kube-system-traefik-admin-11fe1d1c292cfe13cf34 uses a non-existent resolver: default"
time="2019-10-19T13:12:19Z" level=error msg="the router kube-system-traefik-admin-11fe1d1c292cfe13cf34 uses a non-existent resolver: default"
time="2019-10-19T13:12:21Z" level=error msg="the router kube-system-traefik-admin-11fe1d1c292cfe13cf34 uses a non-existent resolver: default"
time="2019-10-19T13:12:23Z" level=error msg="the router kube-system-traefik-admin-11fe1d1c292cfe13cf34 uses a non-existent resolver: default"

I am using acme/let's encrypt certificate generated by traefik v1.7.18

Any idea whats wrong here ?

Following is manifest file for Traefik.

deployment.yaml
kind: DaemonSet
apiVersion: apps/v1
metadata:
  name: traefik
  namespace: kube-system
  labels:
    app: traefik
spec:
  selector:
    matchLabels:
      app: traefik
  minReadySeconds: 5
  updateStrategy:
    type: RollingUpdate
    rollingUpdate:
      maxUnavailable: 1
  template:
    metadata:
      labels:
        app: traefik
    spec:
      serviceAccountName: traefik-ingress-controller
      terminationGracePeriodSeconds: 30
      hostNetwork: true
      containers:
      - name: traefik
        image: traefik:v2.0.2
        ports:
          - name: web
            containerPort: 80
          - name: websecure
            containerPort: 443
          - name: tcp5000
            containerPort: 5000
          - name: admin
            containerPort: 8080
        securityContext:
          privileged: true
        env:
          - name: AWS_REGION
            valueFrom:
              configMapKeyRef:
                name: aws-config
                key: aws_region
          - name: AWS_HOSTED_ZONE_ID
            valueFrom:
              configMapKeyRef:
                name: aws-config
                key: aws_hosted_zone_id
          - name: AWS_ACCESS_KEY_ID
            valueFrom:
              secretKeyRef:
                name: aws-secret
                key: access_key
          - name: AWS_SECRET_ACCESS_KEY
            valueFrom:
              secretKeyRef:
                name: aws-secret
                key: secret_key
        volumeMounts:
          - mountPath: /etc/traefik/traefik.toml
            name: traefik2-config
            subPath: traefik.toml
          - mountPath: /etc/traefik/providers/dynamic.toml
            name: traefik2-config
            subPath: dynamic.toml
          - mountPath: /etc/traefik/storage/
            name: traefik2-storage
      volumes:
      - name: traefik2-config
        configMap:
          name: traefik2-conf
      - name: traefik2-storage
        hostPath:
          path: /tmp/traefik
          type: DirectoryOrCreate

You're on the way by talking about certificate generated by v1.x.

time="2019-10-19T13:12:16Z" level=error msg="Unable to add ACME provider to the providers list: unable to get ACME account: json: cannot unmarshal array into Go value of type acme.StoredData"

Did you take a look about this migration tools to convert your acme.json ?