From 01d246eb337591cda10cb97f6d32ed1e68ca1e69 Mon Sep 17 00:00:00 2001
From: Chris Malloy <cjmalloy@gmail.com>
Date: Wed, 20 Mar 2024 14:34:47 -0300
Subject: [PATCH] NPE

---
 src/main/java/jasper/service/RefService.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/jasper/service/RefService.java b/src/main/java/jasper/service/RefService.java
index b87cbac6..4169761f 100644
--- a/src/main/java/jasper/service/RefService.java
+++ b/src/main/java/jasper/service/RefService.java
@@ -153,8 +153,10 @@ public Instant patch(String url, String origin, Instant cursor, Patch patch) {
 		try {
 			var patched = patch.apply(objectMapper.convertValue(ref, JsonNode.class));
 			var updated = objectMapper.treeToValue(patched, Ref.class);
-			// Tolerate duplicate tags
-			updated.setTags(new ArrayList<>(new LinkedHashSet<>(updated.getTags())));
+			if (updated.getTags() != null) {
+				// Tolerate duplicate tags
+				updated.setTags(new ArrayList<>(new LinkedHashSet<>(updated.getTags())));
+			}
 			// @PreAuthorize annotations are not triggered for calls within the same class
 			if (!auth.canWriteRef(updated)) throw new AccessDeniedException("Can't add new tags");
 			if (created) {