Hi @lnowaczyk
It is because of the small bug in theme. We have modified the function to display a logo of the site to make it easily override through child themes and missed following code on this theme.
Please add following lines of codes on functions.php to fix the issue you have encountered.
if ( ! function_exists( 'ecommerce_gem_the_custom_logo' ) ) :
/**
* Displays custom logo.
*
* @since 1.0.0
*/
function ecommerce_gem_the_custom_logo() {
if ( function_exists( 'the_custom_logo' ) ) {
the_custom_logo();
}
}
endif;
We are extremely sorry for the trouble. Feel free to contact us if you need further help.
Thank you.