[backend] fix: 修复异常处理和类型转换问题

frontend/node_modules/dayjs/plugin/pluralGetSet.d.ts

@@ -0,0 +1,44 @@
+import { PluginFunc, UnitType, ConfigType } from 'dayjs'
+
+declare const plugin: PluginFunc
+export = plugin
+
+declare module 'dayjs' {
+  interface Dayjs {
+    years(): number
+
+    years(value: number): Dayjs
+
+    months(): number
+
+    months(value: number): Dayjs
+
+    dates(): number
+
+    dates(value: number): Dayjs
+
+    weeks(): number
+
+    weeks(value: number): Dayjs
+
+    days(): number
+
+    days(value: number): Dayjs
+
+    hours(): number
+
+    hours(value: number): Dayjs
+
+    minutes(): number
+
+    minutes(value: number): Dayjs
+
+    seconds(): number
+
+    seconds(value: number): Dayjs
+
+    milliseconds(): number
+
+    milliseconds(value: number): Dayjs
+  }
+}