Problem with withdrawal. fields in an OpenCart product card?

Question

opencart

Hello. Who can tell what is the problem?
In the product card, he writes such nonsense - Notice: Undefined variable: dlina in /var/www/prns/data/www/ocp.profalians.com.ua/catalog/view/theme/OPC070164/template/product/product.tpl on line 107
Although the variable is added adequately everywhere.
The rest of the custom fields were also wrong, but then they stopped, I can’t understand what it is connected with ... I did everything according to the principle of the previous ones.
Link to the product card - ocp.profalians.com.ua/index.php?route=product/prod...