From 6c2bcd00407f6c6ab9b17de203e4ee37f9777481 Mon Sep 17 00:00:00 2001
From: Jakob Heher <jakob.heher@iaik.tugraz.at>
Date: Wed, 4 May 2022 15:29:14 +0200
Subject: fix NPE

---
 .../src/main/java/at/asit/pdfover/gui/workflow/states/SigningState.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/SigningState.java b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/SigningState.java
index 740c7d87..cc4f6e3a 100644
--- a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/SigningState.java
+++ b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/workflow/states/SigningState.java
@@ -99,7 +99,7 @@ public class SigningState extends State {
 			if (status.getPreviousState() instanceof MobileBKUState)
 			{
 				String mobileBkuError = ((MobileBKUState)status.getPreviousState()).getStatus().getErrorMessage();
-				if (mobileBkuError.equals("cancel"))
+				if ((mobileBkuError != null) && mobileBkuError.equals("cancel"))
 					this.threadException = new SignatureException(new IllegalStateException());
 			}
 
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