Step 1: Go to shopify dashboard -> themes -> select Debutify theme -> actions -> edit code
Step 2: find product-template.liquid file under SNIPPET folder
Step 3: find the following code:
{%- assign featured_media = current_variant.featured_media | default: product.featured_media -%}
And change it to following code
{%- assign featured_media = product.featured_media -%}