Fatal error: Cannot use isset() on the result of an expression (you can use "null !== expression" instead) in /home/c/cr00771/public_html/local/php_interface/lib/Sale/DiscountForSecondItemAction.php on line 126

[ErrorException] E_COMPILE_ERROR
Cannot use isset() on the result of an expression (you can use "null !== expression" instead) (0)
/home/c/cr00771/public_html/local/php_interface/lib/Sale/DiscountForSecondItemAction.php:126
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