From 4eb6ea1ecee24bded3d4954e0d1e21be0827065a Mon Sep 17 00:00:00 2001
From: Shchienko <shchienko@haulmont.com>
Date: Wed, 29 Jan 2020 15:33:45 +0400
Subject: [PATCH] Cross Tab report generates corrupted xlsx file
 cuba-platform/reports#239

(cherry picked from commit 69d8babab499e1f1730787da424da3b73dc85f07)
---
 .../extraction/controller/CrossTabExtractionController.java   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/core/modules/core/src/com/haulmont/yarg/reporting/extraction/controller/CrossTabExtractionController.java b/core/modules/core/src/com/haulmont/yarg/reporting/extraction/controller/CrossTabExtractionController.java
index e2538d8b..009db86c 100644
--- a/core/modules/core/src/com/haulmont/yarg/reporting/extraction/controller/CrossTabExtractionController.java
+++ b/core/modules/core/src/com/haulmont/yarg/reporting/extraction/controller/CrossTabExtractionController.java
@@ -112,6 +112,10 @@ protected List<BandData> traverseData(ExtractionContext context, List<Map<String
                     return horizontal;
                 }).collect(Collectors.toList());
 
+        if (verticalData.isEmpty()) {
+            verticalData.add(wrapData(context, null));
+        }
+
         return Stream.concat(Stream.of(header), verticalData.stream()).collect(Collectors.toList());
     }