Dashboard Provisioning - cannot save provisioned dashboards

Grafana
1

Platform: Kubernetes
Environment: Grafana Docker container
Grafana versions: 6.5.2, 6.7.1, 7.0.0

I have the following dashboard provisioner defined:

apiVersion: 1
providers:
  - name: 'backups'
    orgId: 1
    folder: 'monitoring infrastructure'
    type: file
    disableDeletion: false
    editable: true
    updateIntervalSeconds: 10
    allowUiUpdates: true
    options:
      path: /var/lib/grafana/dashboards/monitoring-infrastructure

From what I can tell, the provisioner should allow me to update and save dashboards in the Grafana UI. However, when I try to do that, I get the “Cannot save provisioned dashboard” dialog mentioned in the documentation here:

https://grafana.com/docs/grafana/latest/administration/provisioning/#dashboards

I am also getting the following message in the logs, which seems to correlate with each provisioned dashboard that I am unable to save:

msg="Failed to create ProvisionedExternalId" logger=http.server err=Rel: can't make /var/lib/grafana/dashboards/monitoring-infrastructure/my-dashboard.json relative to ''

Is there a known issue with dashboard provisioning like this, or anything to check? I can’t determine the cause of the relative pathing issue either.

Thanks.