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[wenxinll]

Describe the bug

Versions used(KubeSphere/Kubernetes) KubeSphere: v3.2.1

To Reproduce Steps to reproduce the behavior:

1. Go to project detail page
2. Click on 'Grayscale Release'
3. Click on 'Create' in Traffic Mirroring
4. Click on 'next' after input name
5. Select any service and Click on 'next'
6. Input any version number and click on 'next'
7. See error

/cc @kubesphere/sig-console /priority low