The Job Failed due to Snapshot error

Hi Guys, I am new here and currently a newly hired in a new company using Backup Exec 2012 as their backup solution. I am getting an error lately with my backup stating "The job failed with the following error: Resources specified for snapshot do not have any valid data on them. Check if files were deleted or renamed."

When I checked under the Maintanance Contract Information, I saw that the following Features has expired.

1. Backup Exec 2012

2. Agent For Windows

3. Agent For Applications and Databases

do  I need to renew this licenses in order to get rid of those errors or is it okay to continue using it? 

Thank you in advance! :)