diff --git a/src/UI/Components/Board/BoardConfigModal.tsx b/src/UI/Components/Board/BoardConfigModal.tsx
index 340065466..88ffb4fe8 100644
--- a/src/UI/Components/Board/BoardConfigModal.tsx
+++ b/src/UI/Components/Board/BoardConfigModal.tsx
@@ -808,13 +808,25 @@ export class BoardConfigModal extends React.Component<BoardConfigProps, {}>
             app.Editor.MaskManage.Clear();
             let br = this.props.br;
 
-            let path = br.GetSweepPathInWCS().Clone();
-            //路径更新出错,数据和线对不上,再更新一下
-            path.Update();
-            path.ColorIndex = 7;
-            let cu = JigUtils.Draw(path);
+            let path = br.GetSweepPathInWCS()?.Clone();
+
+            if (path)
+            {
+                //路径更新出错,数据和线对不上,再更新一下
+                path.Update();
+                path.ColorIndex = 7;
+                let cu = JigUtils.Draw(path);
+                await selectOutlinePosition(cu);
+            }
+            else
+            {
+                AppToaster.show({
+                    message: "提取圆弧板曲线错误!",
+                    timeout: 5000,
+                    intent: Intent.DANGER,
+                });
+            }
 
-            await selectOutlinePosition(cu);
             app.Editor.ModalManage.ToggleShow();
             app.Editor.MaskManage.ShowMask();
             app.Editor.MaskManage.OnFocusEvent();