From 89732b4512d1b95093aebd17f4d7431544fb2b78 Mon Sep 17 00:00:00 2001
From: Grahame Grieve <grahameg@gmail.com>
Date: Fri, 8 Oct 2021 07:49:30 +1100
Subject: [PATCH] fix bug related to logger in context

---
 .../hl7/fhir/convertors/context/VersionConvertorContext.java  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/org.hl7.fhir.convertors/src/main/java/org/hl7/fhir/convertors/context/VersionConvertorContext.java b/org.hl7.fhir.convertors/src/main/java/org/hl7/fhir/convertors/context/VersionConvertorContext.java
index dc6166e73..6d66422fb 100644
--- a/org.hl7.fhir.convertors/src/main/java/org/hl7/fhir/convertors/context/VersionConvertorContext.java
+++ b/org.hl7.fhir.convertors/src/main/java/org/hl7/fhir/convertors/context/VersionConvertorContext.java
@@ -126,7 +126,9 @@ public class VersionConvertorContext<T> {
    */
   public T getVersionConvertor() {
     T result = threadLocalVersionConverter.get();
-    logger.debug(result.toString());
+    if (result != null && logger != null) {
+      logger.debug(result.toString());
+    }
     return result;
   }
 }
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