Product - Try to download invoice in order menu then error is displayed when Invoice prefix is changed in company profile.

Steps to reproduce :

 1. Login as reseller

 2. Go to company profile > changed invoice prefix

 3. Login as customer of reseller

 4. Go to service menu > Click on order new

 5. Select product and click on order

 6. Purchase product

 7. Click on products menu

 8. Verify Try to download invoice in order then error is displayed

 Expected result :

 > Invoice should be downloaded successfully.