improving error handling

lib/screens/pay/pay_screen.dart

@@ -170,13 +170,28 @@ class _PayScreenState extends State<PayScreen> with TickerProviderStateMixin {
     final apiResponse = await controller.doTransaction();
 
     if (!apiResponse.isSuccess) {
-      if (context.mounted) {
-        AppSnackBar.showError(
-          context,
+      String errorMessage =
           controller.model.errorMessage ??
-              apiResponse.error ??
-              "Transaction failed",
-        );
+          apiResponse.error ??
+          "Transaction failed";
+      if (context.mounted) {
+        if (errorMessage.contains(
+          "We can't process that transaction right now",
+        )) {
+          AppSnackBar.show(
+            context,
+            errorMessage,
+            action: SnackBarAction(
+              label: 'Check uptime',
+              textColor: Colors.yellow, // Optional custom styling
+              onPressed: () {
+                context.push('/uptime');
+              },
+            ),
+          );
+        } else {
+          AppSnackBar.showError(context, errorMessage);
+        }
       }
     } else if (controller.model.status == "SUCCESS" && context.mounted) {
       context.push('/confirm');