CI4 libaries function call in VIEW

I have an error in my example, remove the ] at the end:

PHP Code:

<?= view_cell('\App\Libraries\Product::Check_operation', 'final=4, operation=7') ?>

Sorry sir,
my bad again

but still

getting below message


ArgumentCountError

Too few arguments to function App\Libraries\Product::__construct(), 0 passed in H:\xampp749\htdocs\aks\system\View\Cell.php on line 123 and exactly 2 expected

after reading  

The only restriction is that the class can not have any constructor parameters. This is intended to be used within views, and is a great aid to modularizing your code.

is that what error ???