Warning: Undefined property: messageStack::$messages in D:\inetpub\webs\paolocadinuit\oscommerce\catalog\includes\classes\message_stack.php on line 80

Fatal error: Uncaught TypeError: sizeof(): Argument #1 ($value) must be of type Countable|array, null given in D:\inetpub\webs\paolocadinuit\oscommerce\catalog\includes\classes\message_stack.php:80 Stack trace: #0 D:\inetpub\webs\paolocadinuit\oscommerce\catalog\includes\header.php(13): messageStack->size() #1 D:\inetpub\webs\paolocadinuit\oscommerce\catalog\includes\template_top.php(57): require('...') #2 D:\inetpub\webs\paolocadinuit\oscommerce\catalog\index.php(35): require('...') #3 {main} thrown in D:\inetpub\webs\paolocadinuit\oscommerce\catalog\includes\classes\message_stack.php on line 80