Made a child theme, everything works well, except for one. In the parent theme there is a file /inc/wp_bootstrap_navwalker.php with a class and a function that need to be slightly modified (responsible for the menu operation).
class wp_bootstrap_navwalker extends Walker_Nav_Menu { public function start_lvl( &$output, $depth = 0, $args = array() ) { ... } } Is it possible to reassign this function or the entire class in a child theme?
header.phpinto which this class was added under a new name and addressed it - it worked. Apparently, this is the only possible solution. Add an answer, mark it as correct? - federk