fix bug

src/app/routes/datatable/datatable-routing.module.ts

@@ -0,0 +1,13 @@
+import { NgModule } from '@angular/core';
+import { RouterModule, Routes } from '@angular/router';
+import { DatatableDataindexComponent } from './dataindex/dataindex.component';
+
+const routes: Routes = [
+
+  { path: 'dataindex', component: DatatableDataindexComponent }];
+
+@NgModule({
+  imports: [RouterModule.forChild(routes)],
+  exports: [RouterModule]
+})
+export class DatatableRoutingModule { }