From ca0d68ed0854f46ef643e10fb74aff5f5d005263 Mon Sep 17 00:00:00 2001
From: Shadowrs <shadow_jak@hotmail.co.uk>
Date: Wed, 5 Sep 2018 10:40:58 +0100
Subject: [PATCH] Add an NPE catch wtih useful message

---
 .../java/org/parabot/core/parsers/hooks/XMLHookParser.java     | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/java/org/parabot/core/parsers/hooks/XMLHookParser.java b/src/main/java/org/parabot/core/parsers/hooks/XMLHookParser.java
index acde8cf..073b78e 100644
--- a/src/main/java/org/parabot/core/parsers/hooks/XMLHookParser.java
+++ b/src/main/java/org/parabot/core/parsers/hooks/XMLHookParser.java
@@ -65,6 +65,9 @@ public class XMLHookParser extends HookParser {
     }
 
     private static final String getValue(String tag, Element element) {
+        if (element.getElementsByTagName(tag).item(0) == null) {
+            throw new NullPointerException("MISSING HOOK TAG: The '"+tag+"' xml tag is missing from one of the hooks of type: "+element.getParentNode().getNodeName());
+        }
         NodeList nodes = element.getElementsByTagName(tag).item(0)
                 .getChildNodes();
         if (nodes.getLength() == 0 || nodes.item(0) == null) {