In style.css “import:” I had been using.
It was solved by changing the way of using wp_enqueue_script ().
add_action (‘wp_enqueue_scripts’, ‘theme_enqueue_styles’);
function theme_enqueue_styles () {
wp_enqueue_style (. ‘parent-style’, get_template_directory_uri () ‘/style.css’);
wp_enqueue_style (‘child-style’,
get_stylesheet_directory_uri (). ‘/style.css’,
array (‘parent-style’)
);
}