microk8s: Cannot enable knative

I can’t enable knative. It waits for istio to be ready but istio doesn’t seem to be ready. I tried to disable and enable istio again but it gives another error.

(kubeflow) user01@user-X299-WU8:/data/mhkwon/kubeflow/istio-1.8.4$ microk8s enable knative
Enabling Knative
Addon istio is already enabled.
Waiting for Istio to be ready
......................................................................................^C
Aborted!
(kubeflow) user01@user-X299-WU8:/data/mhkwon/kubeflow/istio-1.8.4$ microk8s status
microk8s is running
high-availability: no
  datastore master nodes: 127.0.0.1:19001
  datastore standby nodes: none
addons:
  enabled:
    dashboard            # The Kubernetes dashboard
    dns                  # CoreDNS
    gpu                  # Automatic enablement of Nvidia CUDA
    ha-cluster           # Configure high availability on the current node
    ingress              # Ingress controller for external access
    istio                # Core Istio service mesh services
    metallb              # Loadbalancer for your Kubernetes cluster
    metrics-server       # K8s Metrics Server for API access to service metrics
    storage              # Storage class; allocates storage from host directory
  disabled:
    ambassador           # Ambassador API Gateway and Ingress
    cilium               # SDN, fast with full network policy
    fluentd              # Elasticsearch-Fluentd-Kibana logging and monitoring
    helm                 # Helm 2 - the package manager for Kubernetes
    helm3                # Helm 3 - Kubernetes package manager
    host-access          # Allow Pods connecting to Host services smoothly
    jaeger               # Kubernetes Jaeger operator with its simple config
    keda                 # Kubernetes-based Event Driven Autoscaling
    knative              # The Knative framework on Kubernetes.
    kubeflow             # Kubeflow for easy ML deployments
    linkerd              # Linkerd is a service mesh for Kubernetes and other frameworks
    multus               # Multus CNI enables attaching multiple network interfaces to pods
    portainer            # Portainer UI for your Kubernetes cluster
    prometheus           # Prometheus operator for monitoring and logging
    rbac                 # Role-Based Access Control for authorisation
    registry             # Private image registry exposed on localhost:32000
    traefik              # traefik Ingress controller for external access
(kubeflow) user01@user-X299-WU8:/data/mhkwon/kubeflow/istio-1.8.4$ microk8s disable istio
Disabling Istio
Error from server (NotFound): namespaces "istio-system" not found
(kubeflow) user01@user-X299-WU8:/data/mhkwon/kubeflow/istio-1.8.4$ microk8s enable istio
Addon istio is already enabled.

This is the tarball. inspection-report-20210323_204727.tar.gz

I’m facing so many bugs on microk8s…