orb agent (pktvisor) segmentation fault (core dumped)

[lixinchina1]

Describe the bug
A clear and concise description of what the bug is.
Detecting agent restarted and saw these in the log:
{"level":"error","ts":"2023-07-10T00:09:46.906Z","caller":"policyMgr/manager.go:226","msg":"failed to remove policy from backend","policy_id":"90cee6f0-69a4-4952-836c-02a103cf882e","policy_name":"xxx","error":"signal: segmentation fault (core dumped)"}

To Reproduce
I am not sure how to reproduce this but we can see it happened on diff hosts on diff time
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4. See error

Expected behavior
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Screenshots
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Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
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