esc' => 'Package Name' ),
            "{{author}}"        => array( 'value' => '', 'desc' => 'Package author profile' ),
            "{{package_url}}"   => array( 'value' => '', 'desc' => 'Package URL' ),
            "{{edit_url}}"      => array( 'value' => '', 'desc' => 'Package Edit URL' )
        );

	    $tags["{{client_ip}}"] = ['value' => wpdm_get_client_ip(), 'desc' => 'User IP'];

        if(is_user_logged_in()) {
            global $current_user;
            $tags["{{user_login}}"] = ['value' => $current_user->user_login, 'desc' => 'User login'];
            $tags["{{user_email}}"] = ['value' => $current_user->user_email, 'desc' => 'User email'];
            $tags["{{user_first_name}}"] = ['value' => $current_user->user_firstname, 'desc' => 'User first name'];
            $tags["{{user_last_name}}"] = ['value' => $current_user->user_lastname, 'desc' => 'User last name'];
            $tags["{{user_display_name}}"] = ['value' => $current_user->display_name, 'desc' => 'User display name'];
            $tags["{{user_description}}"] = ['value' => get_user_meta($current_user->ID, 'description', true), 'desc' => 'User display name'];
	        $tags["{{um_...metakey...}}"] = ['value' => '', 'desc' => 'User meta data, replace <code>...metakey...</code> with user meta key'];
        }
	    return apply_filters( "wpdm_email_template_tags", $tags );
    }

    public static function defaultTemplate( $id ) {
        $templates = self::templates();

        return isset($templates[ $id ], $templates[ $id ]['default']) ? $templates[ $id ]['default'] : null;
    }

    public static function getTemplate( $id ) {
        $template = maybe_unserialize( get_option( "__wpdm_etpl_" . $id, false ) );
        //print_r($template);die();
        $default = self::defaultTemplate( $id );
        if ( ! $template ) {
            $template = $default;
        }
        $template['message'] = ! isset( $template['message'] ) || trim( strip_tags( $template['message'] ) ) == '' ? $default['message'] : $template['message'];

        return $template;
    }

    public static function prepare( $id, $params ) {
        $template = self::getTemplate( $id );

        $params   = apply_filters( "wpdm_email_params_" . $id, $params );
        $template = apply_filters( "wpdm_email_template_" . $id, $template );
        if(!is_array($params)) $params = [];
        $__wpdm_email_setting = maybe_unserialize( get_option( '__wpdm_email_setting', array() ) );
        if(!is_array($__wpdm_email_setting)) $__wpdm_email_setting = [];
        $params                 = $params + $__wpdm_email_setting;
        $logo = isset($params['logo']) ? esc_url($params['logo']) : '';
        $banner = isset($params['banner']) ? esc_url($params['banner']) : '';
	    $logo_wh  = isset( $params['logo_w'] ) ? "width:{$params['logo_w']};" : "";
		$logo_wh .= isset($params['logo_h']) ? "height:{$params['logo_h']};" : "";
        $params['img_logo']     = isset( $params['logo'] ) && $params['logo'] != '' ? "<img style='max-width: 70%;{$logo_wh}' src='{$logo}' alt='".esc_attr(get_option('blogname'))."' />" : get_bloginfo('name');
        $params['banner']       = isset( $params['banner'] ) && $params['banner'] != '' ? esc_url($params['banner']) : "";
        $params['banner_img']   = isset( $params['banner'] ) && $params['banner'] != '' ? "<img style='max-width: 100%;' src='{$banner}' alt='Banner Image' />" : "";
		$params['images_dir'] = WPDM_BASE_URL.'src/__/views/email-templates/images/';
        $template_file          = get_option( "__wpdm_email_template", "default.html" );
        $emltpl = null;
        if ( isset( $params['template_file'] ) ) {
            $template_file = $params['template_file'];
            $emltpl = Template::locate( "email-templates/".sanitize_file_name($template_file), __DIR__ . '/views' );
        }
        if(!$emltpl)
            $emltpl = Template::locate( "email-templates/".sanitize_file_name($template_file), __DIR__ . '/views' );
        if($emltpl)
            $emltpl = realpath($emltpl);

        if($template_file === '' || !$emltpl)
            $emltpl = Template::locate( "email-templates/default.html", __DIR__ . '/views' );

        if(file_exists($emltpl))
            $template_data = file_get_contents( $emltpl );

        $template['message'] = str_replace( "{{message}}", stripslashes( wpautop( $template['message'] ) ), $template_data );
        $tags                = self::tags();
        $new_pasrams         = array();
        foreach ( $params as $key => $val ) {
            $new_pasrams["{{{$key}}}"] = stripslashes($val);
            $new_pasrams["[#{$key}#]"] = stripslashes($val);
        }
        $params = $new_pasrams;
        foreach ( $tags as $key => $info ) {
            if ( ! isset( $params[$key] )) {
                $params[$key] = $info['value'];
            }
        }

        $template['subject'] = isset($params['subject']) ? $params['subject'] : str_replace( array_keys( $params ), array_values( $params ), $template['subject'] );
        if(isset($template['to_email']))
            $template['to_email'] = str_replace( array_keys( $params ), array_values( $params ), $template['to_email'] );
        $template['message'] = str_replace( array_keys( $params ), array_values( $params ), $template['message'] );
        $template['message'] = self::compile($template['message']);
        $template['message'] = self::compile($template['message'], "/\{\{([^\}]+)\}\}/");
		return $template;
    }

    public static function send( $id, $params ) {

		if(!$id || !WPDM()->email->getStatus($id)) return false;

        $email       = self::info( $id );
        $template    = self::prepare( $id, $params );
        $headers[]     = "From: " . $template['from_name'] . " <" . $template['from_email'] . ">";
        $headers[]     = "Content-type: text/html";
        if(!isset($template['to_email'])) {
            $template['to_email'] = get_option('admin_email');
        }
        //$to          = $email['for'] !== 'admin' && !isset($params['to_seller']) && isset($params['to_email']) ? $params['to_email'] : $template['to_email'];
	    if(!isset($template['to_email'])) $template['to_email'] = get_option('admin_email');
	    $to = isset($params['to_email']) ? $params['to_email'] : $template['to_email'];
        $headers     = apply_filters( "wpdm_email_headers_" . str_replace("-", "_", $id), $headers );
        if(isset($params['cc'])){
            $headers[] = "CC: {$params['cc']}";
            unset($params['cc']);
        }
        if(isset($params['bcc'])){
            $headers[] = "Bcc: {$params['bcc']}";
            unset($params['bcc']);
        }

        $attachments = apply_filters( "wpdm_email_attachments_" . str_replace("-", "_", $id), array(), $params );

        return wp_mail( $to, esc_attr($template['subject']), $template['message'], $headers, $attachments );
    }

	function sendMail()
	{
		$params = $this->_params;

		$email       = self::info( $this->_template );
		$template    = self::prepare( $this->_template, $this->_params );
		$headers[]     = "From: " . $template['from_name'] . " <" . $template['from_email'] . ">";
		$headers[]     = "Content-type: text/html";
		if(!isset($template['to_email'])) {
			$template['to_email'] = get_option('admin_email');
		}
		//$to          = $email['for'] !== 'admin' && !isset($params['to_seller']) && isset($params['to_email']) ? $params['to_email'] : $template['to_email'];
		if(!isset($template['to_email'])) $template['to_email'] = get_option('admin_email');
		$to = isset($params['to_email']) ? $params['to_email'] : $template['to_email'];
		$headers     = apply_filters( "wpdm_email_headers_" . str_replace("-", "_", $this->_template), $headers );
		if(isset($params['cc'])){
			$headers[] = "CC: {$params['cc']}";
			unset($params['cc']);
		}
		if(isset($params['bcc'])){
			$headers[] = "Bcc: {$params['bcc']}";
			unset($params['bcc']);
		}

		$attachments = apply_filters( "wpdm_email_attachments_" . str_replace("-", "_", $this->_template), array(), $params );

		return wp_mail( $to, esc_attr($template['subject']), $template['message'], $headers, $attachments );
	}


    public function preview() {
        global $current_user;


        if ( ! isset( $_REQUEST['action'] ) || $_REQUEST['action'] != 'email_template_preview' ) {
            return;
        }

        __::isAuthentic("__empnonce", WPDM_PRI_NONCE, WPDM_MENU_ACCESS_CAP, false);


        $id     = wpdm_query_var('id');
        $email  = self::info( $id );
        $params = array(
            "name"         => $current_user->display_name,
            "username"     => $current_user->user_login,
            "password"     => "**************",
            "package_name" => __( "Sample Package Name" , "download-manager" ),
            "author"       => $current_user->display_name,
            "package_url"  => "#",
            "edit_url"     => "#"
        );

        if ( isset( $_REQUEST['etmpl'] ) ) {
            $params['template_file'] = wpdm_query_var('etmpl');
        }
        $template = self::prepare( $id, $params );
        echo $template['message'];
        die();

    }

    static public function fetch($template, $message) {
        global $current_user;
        if ( ! current_user_can( WPDM_MENU_ACCESS_CAP ) ) {
            die( 'Error' );
        }

        $params['template_file'] = $template;

        $template = self::prepare( 'default', $params );
        return $template['message'];
    }

    static function compile($template, $rule = "/\[\#([^\#]+)\#\]/")
    {
        $compiled = preg_replace_callback($rule, [new self, '_var'], $template);
        return $compiled;
    }

    static function _var($matched)
    {
        if(substr_count($matched[1], "acfx_user_meta_") && file_exists('get_field')){
            $meta_name = str_replace("acfx_user_meta_", "", $matched[1]);
            $meta_value = get_field($meta_name, 'user_'.get_current_user_id());
            return $meta_value;
        }
        if(substr_count($matched[1], "acf_user_meta_")){
            $meta_name = str_replace("acf_user_meta_", "", $matched[1]);
            $data = maybe_unserialize(get_user_meta(get_current_user_id(), 'wpdm_cregf', true));
            $value = wpdm_valueof($data, $meta_name);
            if(is_array($value)) $value = implode(", ", $value);
            return $value;
        }
        if(substr_count($matched[1], "user_meta_")){
            $meta_name = str_replace("user_meta_", "", $matched[1]);
            if(substr_count($meta_name, '/')){
                $meta_name = explode("/", $meta_name);
                $meta_value = get_user_meta(get_current_user_id(), $meta_name[0], true);
                array_shift($meta_name);
                $meta_value = wpdm_valueof($meta_value, implode("/", $meta_name));
                return $meta_value;
            }
            return get_user_meta(get_current_user_id(), $meta_name, true);
        }
	    if(substr_count($matched[1], "um_")){
		    $meta_name = str_replace("um_", "", $matched[1]);
		    if(substr_count($meta_name, '/')){
			    $meta_name = explode("/", $meta_name);
			    $meta_value = get_user_meta(get_current_user_id(), $meta_name[0], true);
			    array_shift($meta_name);
			    $meta_value = wpdm_valueof($meta_value, implode("/", $meta_name));
			    return $meta_value;
		    }
		    return get_user_meta(get_current_user_id(), $meta_name, true);
	    }
        if(substr_count($matched[1], "SERVER_")){
            $meta_name = str_replace("SERVER_", "", $matched[1]);
            $meta_value = wpdm_valueof($_SERVER, $meta_name);
            return $meta_value;
        }
        if(substr_count($matched[1], "REQUEST_")){
            $meta_name = str_replace("REQUEST_", "", $matched[1]);
            $meta_value = wpdm_valueof($_REQUEST, $meta_name);
            if(is_array($meta_value)) $meta_value = implode(", ", $meta_value);
            return $meta_value;
        }
        return $matched[1];
    }


}
<br />
<b>Fatal error</b>:  Uncaught Error: Class 'WPDM\__\Email' not found in /home/kordian1/domains/ostrabrama.pl/public_html/wp-content/plugins/download-manager/src/Admin/AdminController.php:35
Stack trace:
#0 /home/kordian1/domains/ostrabrama.pl/public_html/wp-content/plugins/download-manager/src/Admin/AdminController.php(27): WPDM\Admin\AdminController-&gt;actions()
#1 /home/kordian1/domains/ostrabrama.pl/public_html/wp-content/plugins/download-manager/download-manager.php(188): WPDM\Admin\AdminController-&gt;__construct()
#2 /home/kordian1/domains/ostrabrama.pl/public_html/wp-content/plugins/download-manager/download-manager.php(151): WPDM\WordPressDownloadManager-&gt;__construct()
#3 /home/kordian1/domains/ostrabrama.pl/public_html/wp-content/plugins/download-manager/download-manager.php(533): WPDM\WordPressDownloadManager::instance()
#4 /home/kordian1/domains/ostrabrama.pl/public_html/wp-settings.php(545): include_once('/home/kordian1/...')
#5 /home/kordian1/domains/ostrabrama.pl/public_html/wp-config.php(81): require_once('/home/kordian in <b>/home/kordian1/domains/ostrabrama.pl/public_html/wp-content/plugins/download-manager/src/Admin/AdminController.php</b> on line <b>35</b><br />