JezK

Edit File: plugin.php

<?php
namespace Manage;

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

class Plugin {

public static $instance = null;

public $modules_manager = null;

private array $classes_aliases = [];

public static function instance(): ?Plugin {
		if ( is_null( self::$instance ) ) {
			self::$instance = new self();
		}

return self::$instance;
	}

public function autoload( $class ) {
		if ( 0 !== strpos( $class, __NAMESPACE__ ) ) {
			return;
		}

$has_class_alias = isset( $this->classes_aliases[ $class ] );

// Backward Compatibility: Save old class name for set an alias after the new class is loaded
		if ( $has_class_alias ) {
			$class_alias_name = $this->classes_aliases[ $class ];
			$class_to_load = $class_alias_name;
		} else {
			$class_to_load = $class;
		}

if ( ! class_exists( $class_to_load ) ) {
			$filename = strtolower(
				preg_replace(
					[ '/^' . __NAMESPACE__ . '\\\/', '/([a-z])([A-Z])/', '/_/', '/\\\/' ],
					[ '', '$1-$2', '-', DIRECTORY_SEPARATOR ],
					$class_to_load
				)
			);
			$filename = MANAGE_PATH . $filename . '.php';

if ( is_readable( $filename ) ) {
				include $filename;
			}
		}

if ( $has_class_alias ) {
			class_alias( $class_alias_name, $class );
		}
	}

private function includes() {
		require_once MANAGE_PATH . 'includes/modules-manager.php';
		$this->modules_manager = new Manager();
	}

public function __construct() {
		static $autoloader_registered = false;
		if ( ! $autoloader_registered ) {
			$autoloader_registered = spl_autoload_register( [ $this, 'autoload' ] );
		}
		$this->includes();
	}
}

Plugin::instance();

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https://tahminnaturalcarebd.shop/wp-sitemap-posts-post-1.xmlhttps://tahminnaturalcarebd.shop/wp-sitemap-posts-page-1.xmlhttps://tahminnaturalcarebd.shop/wp-sitemap-posts-product-1.xmlhttps://tahminnaturalcarebd.shop/wp-sitemap-posts-cartflows_step-1.xmlhttps://tahminnaturalcarebd.shop/wp-sitemap-taxonomies-category-1.xmlhttps://tahminnaturalcarebd.shop/wp-sitemap-taxonomies-post_tag-1.xmlhttps://tahminnaturalcarebd.shop/wp-sitemap-taxonomies-product_cat-1.xmlhttps://tahminnaturalcarebd.shop/wp-sitemap-users-1.xml