From 67a6cb9392e857b4a02260d291ee0179f1281e30 Mon Sep 17 00:00:00 2001
From: Maxim <maxplusim@mail.ru>
Date: Fri, 23 Feb 2024 11:48:34 +0300
Subject: [PATCH] Fix NullPointerException

---
 .../src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDAnnot.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDAnnot.java b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDAnnot.java
index 63dc91a7..477abb42 100644
--- a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDAnnot.java
+++ b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDAnnot.java
@@ -268,7 +268,7 @@ public String getstructParentType() {
 			PDNumberTreeNode parentTreeRoot = structTreeRoot.getParentTree();
 			COSBase structureElement = null;
 			try {
-				PDParentTreeValue treeValue = (PDParentTreeValue)parentTreeRoot.getValue(structParent);
+				PDParentTreeValue treeValue = parentTreeRoot != null ? (PDParentTreeValue)parentTreeRoot.getValue(structParent) : null;
 				if (treeValue != null) {
 					structureElement = treeValue.getCOSObject();
 				}