Scheduled PDF report for users without permissions to the dashboard or disabled users

Steps to reproduce:

1. Create user with admin role (add valid email media)
2. Create dashboard as super admin
3. Keep dashboard sharing type as private
4. Create report for this dashboard
5. Add admin to subscriptions
6. Select "Generate report by" as Recipient for admin
7. Set start time in 2 min
8. Check pdf report

Result:
pdf report was received but with ерtу message "No permissions to referred object or it does not exist!" in dashboard
Expected:
The user doesn't receive a pdf report.
The frontend give a 403 status to the server when there is no permissions to the dashboard. Error message should be visible somewhere: server/web-service log and/or on reports page in info column

The similar scenario when user:

• in "Disabled" group
• user group is disabled
• Frontend access disabled for user group

dashboard should be public and user receive empty pdf report.