[BUG] Saved object relationship shows Error: undefined Response

[ruanyl]

Describe the bug

1. create a dashboard and add some visualizations
2. open saved object management(assets page) and delete one referenced visualization which will leave the dashboard with orphan reference
3. Select "Relationships" from the dashboard dropdown menu

Expected behavior
It should display the valid reference with excluding the missing one. However an error message shows.

OpenSearch Version
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Dashboards Version
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Plugins

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Screenshots

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Host/Environment (please complete the following information):

• OS: [e.g. iOS]
• Browser and version [e.g. 22]

Additional context

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