Kubectl logs should be able to retrieve and filter logs

[Zhaoyun]

When I used sonobuoy for Software conformance, the following failures occurred

• Failure [10.441 seconds]
[sig-cli] Kubectl client
/workspace/anago-v1.14.3-beta.0.37+5e53fd6bc17c0d/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/kubectl/framework.go:23
  [k8s.io] Kubectl logs
  /workspace/anago-v1.14.3-beta.0.37+5e53fd6bc17c0d/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/framework/framework.go:687
    should be able to retrieve and filter logs  [Conformance] [It]
    /workspace/anago-v1.14.3-beta.0.37+5e53fd6bc17c0d/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/framework/framework.go:692

    Expected
        <int>: 21
    to equal
        <int>: 1

    /workspace/anago-v1.14.3-beta.0.37+5e53fd6bc17c0d/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/kubectl/kubectl.go:1232

This problem has been mentioned on this page, but it has been solved.
Why did I encounter this problem?
Who can help me with this? I'm very grateful.