Opencart Product color option images problem

[stoni]

Hi,

I downloaded the Product Color Option Images 2.1.0.2 plugin for the OC webshop. During the installation there is an error in the log:
FILE: admin/controller/catalog/product.php
CODE: $this->response->setOutput($this->load->view('catalog/product_form', $data));
NOT FOUND!
It's in the log:
2023-08-31 21:13:20 - PHP Notice: Undefined index: pi_pcbi_color in D:\tmp\bende.hu\teszt\system\storage\modification\admin\controller\catalog\product.php on line 1217
2023-08-31 21:13:20 - PHP Warning: in D:\tmp\bende.hu\teszt\system\storage\modification\admin\view\template\catalog\product_form.tpl on line 833
2023-08-31 21:13:20 - PHP Notice: Undefined variable: result_color in D:\tmp\bende.hu\teszt\system\storage\modification\admin\view\template\catalog\product_form.tpl on line 833
What could be the reason for this? Can you help me troubleshoot this?
Thank you!