Export error

add_action( 'init', 'cptui_register_my_taxes' );
function cptui_register_my_taxes() {

	$labels = array(
		"name" => "step_by_step_tags",
		"label" => "Step by Step Tags",
			);

	$args = array(
		"labels" => $labels,
		"hierarchical" => false,
		"label" => "Step by Step Tags",
		"show_ui" => true,
		"query_var" => true,
		"rewrite" => array( 'slug' => 'step_by_step_tags', 'with_front' => false ),
		"show_admin_column" => false,
	);
	register_taxonomy( "step_by_step_tags", array( "step_by_step" ), $args );

	$labels = array(
		"name" => "step_by_step_categs",
		"label" => "Step by Step Categories",
			);

	$args = array(
		"labels" => $labels,
		"hierarchical" => true,
		"label" => "Step by Step Categories",
		"show_ui" => true,
		"query_var" => true,
		"rewrite" => array( 'slug' => 'step_by_step_categs', 'with_front' => false ),
		"show_admin_column" => false,
	);
	register_taxonomy( "step_by_step_categs", array( "step_by_step" ), $args );

	$labels = array(
		"name" => "step_by_step_levels",
		"label" => "Step by Step Levels",
			);

	$args = array(
		"labels" => $labels,
		"hierarchical" => true,
		"label" => "Step by Step Levels",
		"show_ui" => true,
		"query_var" => true,
		"rewrite" => array( 'slug' => 'step_by_step_levels', 'with_front' => false ),
		"show_admin_column" => false,
	);
	register_taxonomy( "step_by_step_levels", array( "step_by_step" ), $args );

	$labels = array(
		"name" => "course_dates",
		"label" => "Course Dates",
			);

	$args = array(
		"labels" => $labels,
		"hierarchical" => true,
		"label" => "Course Dates",
		"show_ui" => true,
		"query_var" => true,
		"rewrite" => array( 'slug' => 'course_dates', 'with_front' => false true),
		"show_admin_column" => false,
	);
	register_taxonomy( "course_dates", array( "course" ), $args );

	$labels = array(
		"name" => "course_levels",
		"label" => "Course Levels",
			);

	$args = array(
		"labels" => $labels,
		"hierarchical" => true,
		"label" => "Course Levels",
		"show_ui" => true,
		"query_var" => true,
		"rewrite" => array( 'slug' => 'course_levels', 'with_front' => false ),
		"show_admin_column" => false,
	);
	register_taxonomy( "course_levels", array( "course" ), $args );

// End cptui_register_my_taxes
}

This is the code generated by the plugin, the problem is with this line

"rewrite" => array( 'slug' => 'course_dates', 'with_front' => false true),

I have selected rewrite with front: false and rewrite hierarchival: true. I guess it shoudl be 'hierarchical' => true

https://ww.wp.xz.cn/plugins/custom-post-type-ui/