From c619745a4a5b703ed43825a0b78ab9276cd93657 Mon Sep 17 00:00:00 2001
From: Thomas Peetz <thomas.peetz@ingenieurbuero-peetz.de>
Date: Wed, 8 Jan 2025 08:05:09 +0100
Subject: [PATCH] prevent NPE

---
 .../java/de/thpeetz/kontor/admin/services/MetaDataService.java  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/springboot/src/main/java/de/thpeetz/kontor/admin/services/MetaDataService.java b/springboot/src/main/java/de/thpeetz/kontor/admin/services/MetaDataService.java
index 904a7e1..3f1c773 100644
--- a/springboot/src/main/java/de/thpeetz/kontor/admin/services/MetaDataService.java
+++ b/springboot/src/main/java/de/thpeetz/kontor/admin/services/MetaDataService.java
@@ -54,7 +54,7 @@ public class MetaDataService {
                 log.debug("columnModifier has to be changed to {}", columnModifier);
                 column.setColumnModifier(columnModifier);
             }
-            if (!column.getIsShown().equals(isShown)) {
+            if (isShown != null && !isShown.equals(column.getIsShown())) {
                 log.debug("isShown has to be change to {}}", isShown);
                 column.setIsShown(isShown);
             }