If you have deleted some users in Modeler -> Security Roles
It is better to make sure all the users are gone from database & excel ends too.
Login SQL Database Engine -> CallistoAppDisctionary -> Tables:
You need to check those three tables, remove the deleted accounts from those 3 tables.
Login Excel -> Admin_Tasks:
- Update Menu Users -> Delete that deleted user account.
- Update Workflow Driver 1 -> if you find that deleted user account, change it to some other valid user account
- Generate workflow
- Budget Item -> is there any specific template assigned to the delete user account? if so, change it.