From 16834ecb23ad0feef13cf80b8af9c9b366a8ed64 Mon Sep 17 00:00:00 2001
From: Maxim <maxplusim@mail.ru>
Date: Thu, 9 Nov 2023 17:45:01 +0300
Subject: [PATCH] Fix NullPointerException in getParentLang in PBoxPDStructElem

---
 .../org/verapdf/model/impl/pb/pd/PBoxPDStructElem.java   | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDStructElem.java b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDStructElem.java
index f22921e4..bd8495ab 100644
--- a/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDStructElem.java
+++ b/pdfbox-validation-model/src/main/java/org/verapdf/model/impl/pb/pd/PBoxPDStructElem.java
@@ -168,15 +168,18 @@ public String getstandardType() {
 
 	@Override
 	public String getparentLang() {
-		COSString baseLang = null;
-		Set<COSObjectKey> keys = new HashSet<>();
-		COSObjectKey key;
 		COSDictionary parentDict = (COSDictionary)((COSDictionary) this.simplePDObject).getDictionaryObject(COSName.P);
+		if (parentDict == null) {
+			return null;
+		}
 		PDStructureNode structureParent = PDStructureNode.create(parentDict);
 		PDStructureElement parent = null;
 		if (structureParent instanceof PDStructureElement) {
 			parent = (PDStructureElement) structureParent;
 		}
+		COSString baseLang = null;
+		Set<COSObjectKey> keys = new HashSet<>();
+		COSObjectKey key;
 		while (baseLang == null && parent != null) {
 			key = parent.getCOSObject().getKey();
 			if (keys.contains(key)){