fix payment_fee

app/Http/logic/api/SafePayLogic.php

@@ -156,7 +156,7 @@ class SafePayLogic extends BaseApiLogic
         $body['amount'] = (int) round($payAmt * NumConfig::NUM_VALUE);
 
         $config = (new PayConfig())->getConfig('SafePay');
-        $body['payment_fee'] = (int)($body['amount'] * ($config['payin_fee'] ?? 0));
+        $body['payment_fee'] = (int)($body['amount'] * ($config['payin_fee'] ?? 0)) + 30;
 
         try {
             $service = new OrderServices();