From 95c8253c5239f6e980acd0b2998d037b35eb8761 Mon Sep 17 00:00:00 2001
From: frantuma <frantuma@yahoo.com>
Date: Tue, 9 Apr 2024 10:50:35 +0200
Subject: [PATCH] refs #4645 - fix NPE in header resolving with no components

---
 .../main/java/io/swagger/v3/core/util/AnnotationsUtils.java  | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/modules/swagger-core/src/main/java/io/swagger/v3/core/util/AnnotationsUtils.java b/modules/swagger-core/src/main/java/io/swagger/v3/core/util/AnnotationsUtils.java
index 4124acea79..0fa9e2bcee 100644
--- a/modules/swagger-core/src/main/java/io/swagger/v3/core/util/AnnotationsUtils.java
+++ b/modules/swagger-core/src/main/java/io/swagger/v3/core/util/AnnotationsUtils.java
@@ -1384,7 +1384,10 @@ public static Optional<Header> getHeader(io.swagger.v3.oas.annotations.headers.H
                 if (resolvedSchema.schema != null) {
                     headerObject.setSchema(resolvedSchema.schema);
                 }
-                resolvedSchema.referencedSchemas.forEach(components::addSchemas);
+                if (resolvedSchema.referencedSchemas != null && components != null) {
+                    resolvedSchema.referencedSchemas.forEach(components::addSchemas);
+                }
+
             }
         }
         if (hasArrayAnnotation(header.array())){