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125We realized that when entering the amount and pressing the enter key 2 times, Retail POS behaves differently
1. Inputting the amount
2. Pressing Enter key twice
A transaction receipt will not be printed and it will throw an error value cannot be null. What i want to know is how do i locate the class that references this dll in the picture below so i could customize it and throw a different error message instead of the technical one. It only shows the dll's call stack.
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