修改

library/build/unplugin/components.d.ts

@@ -50,6 +50,8 @@ declare module 'vue' {
     ElAvatar: typeof import('element-plus/es')['ElAvatar']
     ElBacktop: typeof import('element-plus/es')['ElBacktop']
     ElBadge: typeof import('element-plus/es')['ElBadge']
+    ElBreadcrumb: typeof import('element-plus/es')['ElBreadcrumb']
+    ElBreadcrumbItem: typeof import('element-plus/es')['ElBreadcrumbItem']
     ElButton: typeof import('element-plus/es')['ElButton']
     ElButtonGroup: typeof import('element-plus/es')['ElButtonGroup']
     ElCalendar: typeof import('element-plus/es')['ElCalendar']