Hot fix - 1.5.1 - Fix the loading of WooViet_VND_PayPal_Standard

Reported in https://wordpress.org/support/topic/plugin-bi-loi-phan-chuyen-doi-tien-te-paypal/

Bug introduced in this line and commit https://github.com/htdat/woo-viet/commit/752f6c26f35c33ffede1f3da9d208ca0e74ae7d8#diff-69930de797b06bf012c5e6601f0f0caeR260

readme.md

@@ -8,6 +8,10 @@ Xem phiên bản tiếng Việt tại đây https://vi.wordpress.org/plugins/woo
 
 ## Changelog
 
+### 1.5.1 - 2020.09.13 
+
+* Fix the loading of WooViet_VND_PayPal_Standard
+
 ### 1.5.0 - 2020.09.10
 
 * Add the OnePay international gateway #74 

readme.txt

@@ -4,7 +4,7 @@ Tags: OnePay WooCommerce, OnePay Vietnam, WooCommerce Vietnam, vietnam, vietname
 Requires at least: 4.3
 Tested up to: 5.5.1
 Requires PHP: 5.6
-Stable tag: 1.5.0
+Stable tag: 1.5.1
 License: GPLv2 or later
 License URI: https://www.gnu.org/licenses/gpl-2.0.html
 

woo-viet.php

@@ -7,10 +7,10 @@
  * Author URI: https://profiles.wordpress.org/htdat
  * Text Domain: woo-viet
  * Domain Path: /languages
- * Version: 1.5.0
+ * Version: 1.5.1
  *
  * WC requires at least: 3.0
- * WC tested up to: 4.4.1
+ * WC tested up to: 4.5.1
  *
  * License:     GPLv2+
  */
@@ -257,7 +257,7 @@ class WooViet {
 
 		// Check if "Support VND for the PayPal Standard gateway" is enabled
 		if ( 'yes' == $settings['vnd_paypal_standard']['enabled']
-		     AND class_exists( 'WC_Gateway_PPEC' )
+		     AND class_exists( 'WC_Gateway_Paypal' )
 		     AND 'VND' == get_woocommerce_currency()
 		) {
 			include( WOO_VIET_DIR . 'inc/class-wooviet-vnd-paypal-standard.php' );