开发:修复类型错误

src/UI/Components/ToolBar/ResourceLibrary/RsourceStore.ts

@@ -370,7 +370,7 @@ export default class ResourceStore
         }, module_detail.type === ResType.Mtl ? CommandNames.ApplyMtl : "绘制模型");
 
     };
-    PraseMaterial = async (mtlPath: string) =>
+    PraseMaterial = async (mtlPath: string): Promise<PhysicalMaterialRecord | undefined> =>
     {
         let name = ParseUrlName(mtlPath);
         let mtl = app.Database.MaterialTable.GetAt(name);
@@ -385,7 +385,7 @@ export default class ResourceStore
                     timeout: 2000,
                     intent: Intent.DANGER,
                 });
-                return "";
+                return;
             }
 
             let dataString = await res.text();