[backend] fix: 修复异常处理和类型转换问题

frontend/node_modules/antd/es/statistic/Countdown.d.ts

@@ -0,0 +1,10 @@
+import * as React from 'react';
+import type { StatisticProps } from './Statistic';
+import type { valueType } from './utils';
+export interface CountdownProps extends StatisticProps {
+    format?: string;
+    onFinish?: () => void;
+    onChange?: (value?: valueType) => void;
+}
+declare const _default: React.NamedExoticComponent<CountdownProps>;
+export default _default;