Istio 1.7: WASM filter not working

1

Hi, I tried to deploy a WASM filter using the wasme tools. I using the follow command to deploy a envoyFilter:

wasme deploy istio webassemblyhub.io/life4honor/tinygo-filter:newheader --id=myfilter --namespace=fzy

And, then I got the error ‘Error adding/updating listener(s) virtualInbound: Invalid path: \var\local\lib\wasme-cache\79b39bee1fba687b25f4b0845a2941ee557d5770faf176fea181a4f8a78687a7’ in the istio-proxy logs, which lead to the application pod coudn’t init successfully.

I use Istio 1.7.0 and wasme 0.0.31. Can someone tell me why? Thanks.

Istio proxy logs:

2020-12-02T11:23:33.554450Z     warning envoy config    gRPC config for type.googleapis.com/envoy.config.listener.v3.Listener rejected: Error adding/updating listener(s) virtualInbound: Invalid path: \var\local\lib\wasme-cache\79b39bee1fba687b25f4b0845a2941ee557d5770faf176fea181a4f8a78687a7

2020-12-02T11:23:35.104922Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 1 successful, 0 rejected; lds updates: 0 successful, 1 rejected
2020-12-02T11:23:37.099168Z     warn    Envoy proxy is NOT ready: config not received from Pilot (is Pilot running?): cds updates: 1 successful, 0 rejected; lds updates: 0 successful, 1 rejected
......

EnvoyFilter:

apiVersion: networking.istio.io/v1alpha3
kind: EnvoyFilter
metadata:
  creationTimestamp: "2020-12-02T02:37:05Z"
  generation: 2
  name: httpbin-myfilter
  namespace: fzy
  resourceVersion: "947892"
  selfLink: /apis/networking.istio.io/v1alpha3/namespaces/fzy/envoyfilters/httpbin-myfilter
  uid: 51f512da-8b79-421a-a0be-659740115647
spec:
  configPatches:
  - applyTo: HTTP_FILTER
    match:
      context: SIDECAR_INBOUND
      listener:
        filterChain:
          filter:
            name: envoy.http_connection_manager
            subFilter:
              name: envoy.router
    patch:
      operation: INSERT_BEFORE
      value:
        name: envoy.filters.http.wasm
        typedConfig:
          '@type': type.googleapis.com/udpa.type.v1.TypedStruct
          typeUrl: type.googleapis.com/envoy.extensions.filters.http.wasm.v3.Wasm
          value:
            config:
              name: myfilter
              rootId: root_id
              vmConfig:
                code:
                  local:
                    filename: \var\local\lib\wasme-cache\79b39bee1fba687b25f4b0845a2941ee557d5770faf176fea181a4f8a78687a7
                runtime: envoy.wasm.runtime.v8
                vmId: myfilter
  workloadSelector:
    labels:
      app: httpbin
      version: v1