Hi Jeffry,
You need to use Module.EntityName in the FROM, its also case sensitive. More information can be found here: https://docs.mendix.com/refguide/oql/ there is also a playground to see what queries you can write (and how to utilize them: https://service.mendixcloud.com/p/OQL
Possible issues:
1. There is no entity as 'Open_Reqs' in your module
2. When you creating an OQL, you need to mention the module as well which is totally missing here.
3. There is no attribute as Qty in the mentioned entity.
Providing domain model and the OQL properly will be helpful for looking into this deeply.