PHP Deprecated: round(): Passing null to parameter #1 ($num) of type int|float is deprecated in "PREPAID_TAXABLE_AMOUNT"=> (($item->getDiscountAmount()) ? abs( round($item->getSubTotal(), 2) - round($item->getDiscountAmount(), 2) ) : '' )
I am getting this error in PHP 8 & Magento2.4
How to solve it?
This will fix the problem
"PREPAID_TAXABLE_AMOUNT"=> (($item->getDiscountAmount())
? abs( round((float) $item->getSubTotal(), 2) - round((float) $item->getDiscountAmount(), 2) )
: '' )
You can try this to fix the problem
"PREPAID_TAXABLE_AMOUNT"=> (
($item->getDiscountAmount() !== null)
? abs(
(is_numeric($item->getSubTotal()) ? round($item->getSubTotal(), 2) : 0)
- (is_numeric($item->getDiscountAmount()) ? round($item->getDiscountAmount(), 2) : 0)
)
: ''
)
