[2.3] Applying Same Group Discount on product Causes Internal Server Error (ISE)

Terms

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Bagisto Version(s) affected

2.3

Issue Description

When the Admin tries to apply a discount for the same customer group more than once on product , the system throws an Internal Server Error (500 ISE) instead of showing a proper validation message.

Preconditions

Admin Should be Login

Steps to reproduce

• Login as Admin.
• Navigate to Catalog → product → Group Discounts.
• Create a discount for a customer group (e.g., “Guest”).
• Apply a discount for a same group
• Click Save Product
• Show error

Expected Result

The system should not allow duplicate discounts for the same customer group.

A proper validation/error message should appear, e.g., “A discount for this customer group already exists.”

Actual Result

The system throws an Internal Server Error (500 ISE).

Screenshots

https://webkul.chatwhizz.com/share/view-recording/68dbf228303e820572c517c6

Additional context

No response