how to render the shopify new feature - theme blocks in main-product-section in shopify

I have created blocks in blocks directory. and i want to render the shopify new feature - theme blocks in to default main-product.liquid section.
when I add this code - { “type”: “@theme” } in schema of blocks in main-product.liquid , I get this error - “Theme blocks and section-defined blocks can not be used together”.

so how to resolve this error and how to render or add the theme blocks in main-product.liquid section ??

The image of this error is as follows :

Could you please try deep link to add block directly in theme:

https://<myshopifyDomain>/admin/themes/current/editor?template={template}&
addAppBlockId={uuid}/{handle}&target=mainSection

Sample:

https://<myshopifyDomain>/admin/themes/current/editor?template=product&
addAppBlockId=8f1f0756-d5fc-4c36-b7f4-b2aa8828ced8/star_rating&target=mainSection