Digging into generic error messages from Usage Reporting Plugin

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1

After successfully enabling the Usage Reporting Plugin with masking disabled, the Errors page for our graph now shows some actual error messages, but others remain hidden behind a fairly generic message:

(5 Errored Traces Unavailable)

Is there anyway to get at the underlying error here? Plugin has been configured as follows:

ApolloServerPluginUsageReporting({
     fieldLevelInstrumentation: 0.5,
     sendVariableValues: { all: true },
     sendErrors: { unmodified: true },
     sendUnexecutableOperationDocuments: true,
})

Thanks!