New Case Emails not merging

Hello All,

New Case emails just started having an issue, they are not merging properly.
How can I begin to troubleshoot this?


This is what the contact’s see.

Hi $contact_first_name $contact_last_name,

A new case has been created for Store: $account_name

Case Information: $acase_name (# $acase_case_number) on $acase_date_entered

Status $acase_status
Reference $acase_case_number
Description $acase_description
You may review this Case at: $sugarurl/index.php?module=Cases&action=DetailView&record=$acase_id;