Summary: Fixes config so bad files are not imported.

Test Plan: N/A

Reviewers: michelle, #engineering, oazizi

Reviewed By: #engineering, oazizi

Differential Revision: https://phab.corp.pixielabs.ai/D3670

GitOrigin-RevId: 5f9f7e28e42fb2fe9455bf3b08a913dd102e338d