Duplicating Bank Transfer extension

Hi guys

I've attempted to duplicate the Bank Transfer extension. It seems like I do not have any problem setting up at the admin panel, however, I'm getting error below when I'm checking out as a client. Appreciate your advise

Undefined property: Proxy::getMethod in /home/cart/public_html/shop/catalog/controller/checkout/payment_method.php on line 53

Hi, no OC version posted. Forum rules. However, one of your duplicated / defined method name is unmatched between the controller and the model files. Ensure the controller and model name matches the filenames.

got it thanks!