Why don't I have a product thumbnail in woocommerce?

Question

WordPress

When I go to the goods, there is stupidly no window in which you need to fill in the thumbnail of the entry
https://gyazo.com/1263c45957cfffca6cc44c042e7866ca
Maybe it's because of the theme, I have a
lotus flower
or I could disable something in the settings ??? tell me where to look...

Answer 1

Googled for you

add_theme_support('post-thumbnails'); // поддержка миниатюр
set_post_thumbnail_size(540, 230, false); // размеры

to the theme file function.php
or you can read here
www.advdk.com/blogging/miniatyury-v-wordpress.html

Answer 2

still no ... 0_0

Answer 3

Probably the picture is taken from the Product Gallery.