优化:避免错误

2 years ago · 49b9757750
parent e0f3bd60fb
commit 49b9757750
1 changed files with 1 additions and 1 deletions
--- a/src/Add-on/ExportData.tsx
+++ b/src/Add-on/ExportData.tsx
@ -219,7 +219,7 @@ export function Entitys2Data(ents: Iterable<Entity>): Data
        if (idIndex !== 0)
        {
            let id = app.Database.GetObjectId(idIndex);
-            if (id.Object)
+            if (id?.Object)
            {
                let mtl = id.Object as PhysicalMaterialRecord;
                d.Materials.push(ConverMaterialData(mtl));