Fixed null parameter warning in Mage_Wishlist_Block_Abstract #4068
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Steps to reproduce this issue
Take a look in this file /var/log/system.log. You will see this error, in my test with PHP version 8.3.8.
Deprecated functionality: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/app/code/core/Mage/Wishlist/Block/Abstract.php on line 235