How I fixed the options menu

Options menu wasn’t showing up in the dashboard or on the individual pages, so I replaced the code on line 348 in wp-mpdf.php with this code:

add_action( 'admin_menu', 'wp_mpdf_menu' );

function wp_mpdf_menu() {
	add_options_page( 'WP-MPDF Options', 'WP-MPDF', 'manage_options', 'wp-mpdf', 'mpdf_admin' );

	if(function_exists('add_meta_box')) {
		add_meta_box('mpdf_admin', 'wp-mpdf', 'mpdf_admin_printeditbox', 'post', 'normal', 'high');
		add_meta_box('mpdf_admin', 'wp-mpdf', 'mpdf_admin_printeditbox', 'page', 'normal', 'high');
	}
	else {
		add_action('dbx_post_advanced', 'mpdf_admin_printeditbox_old');
    	add_action('dbx_page_advanced', 'mpdf_admin_printeditbox_old');
	}
}

This solves the issue of the options not showing in the dashboard.
https://wordpress.org/plugins/wp-mpdf/