Help for Aimeos

Hi , i've overwrited existing template and add new components but i've this ambiguous error please help ->
Argument 1 passed to Aimeos\Client\Html\Base::setView() must implement interface Aimeos\MW\View\Iface, null given, called in C:\xampp\htdocs\agribusiness\ext\ai-client-html\client\html\src\Client\Html\Catalog\Lists\Standard.php on line 280

Can you please post the stack trace so we have more information where your problem might be?

i've fixed the issue thanks anyway