From cc6eea567bc69b83c681dd47408164cab19ed5dd Mon Sep 17 00:00:00 2001
From: ousttrue <ousttrue@gmail.com>
Date: Thu, 25 Jul 2024 14:08:21 +0900
Subject: [PATCH] =?UTF-8?q?Vrm10Instance=20=E3=81=8C=E7=84=A1=E3=81=84?=
 =?UTF-8?q?=E7=8A=B6=E6=85=8B=E3=81=A7=20Export=20=E3=82=92=E9=80=9A?=
 =?UTF-8?q?=E3=81=99?=
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---
 Assets/VRM10/Runtime/IO/Vrm10Exporter.cs | 18 ++++++++++++------
 1 file changed, 12 insertions(+), 6 deletions(-)

diff --git a/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs b/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
index 138a80a90..79bdfc6e9 100644
--- a/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
+++ b/Assets/VRM10/Runtime/IO/Vrm10Exporter.cs
@@ -255,15 +255,21 @@ namespace UniVRM10
         int? thumbnailIndex) ExportVrm(GameObject root, Model model, ModelExporter converter,
         VRM10ObjectMeta vrmMeta, List<glTFNode> nodes, ITextureExporter textureExporter)
         {
-            var vrmController = root?.GetComponentOrThrow<Vrm10Instance>();
-
-            if (vrmMeta == null)
+            if (root == null)
             {
-                if (vrmController?.Vrm?.Meta == null)
+                throw new System.ArgumentNullException("root");
+            }
+
+            if (root.TryGetComponent<Vrm10Instance>(out var vrmController))
+            {
+                if (vrmMeta == null)
                 {
-                    throw new NullReferenceException("metaObject is null");
+                    if (vrmController.Vrm?.Meta == null)
+                    {
+                        throw new NullReferenceException("metaObject is null");
+                    }
+                    vrmMeta = vrmController.Vrm.Meta;
                 }
-                vrmMeta = vrmController.Vrm.Meta;
             }
 
             var vrm = new UniGLTF.Extensions.VRMC_vrm.VRMC_vrm