Email Template Server Error - failed opening required modules/A00001

Having a problem creating and editing email templates dose anyone know what would cause this to happen or what A0001_EndUserAccount is?

suitecrm 8.2.4
php 8.0.28
Apache/2.4.56
MariaDB-10.6.12

Uncaught Error: Failed opening required ‘modules/A0001_EndUserAccount/A0001_EndUserAccount.php’