Some namespace backups partially fail.

[mctop524]

After upgrading Tanzu, backups of specific pods are failing. Below is the error message. What could be suspected? There have been no changes to Velero-related settings.

velero version : 1.8.1
time="2024-06-30T16:20:34Z" level=error msg="Error backing up item" backup=velero/d2024-0002-20240630 error="pod volume backup failed: error getting volume path on host: expected one matching path, got 0" error.file="/go/src/github.com/vmware-tanzu/velero/pkg/restic/backupper.go:184" error.function="github.com/vmware-tanzu/velero/pkg/restic.(*backupper).BackupPodVolumes" logSource="pkg/backup/backup.go:417" name=app-lrbinfyqnygzlwb-7d9d9cbd4c-fnqvh