📐 Error occurs in the template of component Angular Material

<div >

  <button mat-fab color="warn" aria-label="Example icon button with a home icon">

    <mat-icon>home</mat-icon>

  </button>

</div>

import { BrowserModule } from '@angular/platform-browser';

import { NgModule } from '@angular/core';

import { FormsModule } from '@angular/forms';

import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';

//*Material-UI

//*@Angular-Material

import { MatIconModule } from '@angular/material/icon';

import { MatButtonModule } from '@angular/material/button';

//*routing replaces import { RouterModule } from '@angular/router';

import { AppRoutingModule } from './app-routing.module';  //*Routing in app-routing.module.ts

//Asp Auth Identiy

import { ApiAuthorizationModule } from 'src/api-authorization/api-authorization.module';

import { AuthorizeGuard } from 'src/api-authorization/authorize.guard';

import { AuthorizeInterceptor } from 'src/api-authorization/authorize.interceptor';

//App Components

import { AppComponent } from './app.component';

import { NavMenuComponent } from './nav-menu/nav-menu.component';

import { HomeComponent } from './home/home.component';

import { ListArticlesComponent } from './articles/list-articles/list-articles.component';

import { EditArticleComponent } from './articles/edit-article/edit-article.component';

import { ReadArticleComponent } from './articles/read-article/read-article.component';

@NgModule({

  declarations: [

    AppComponent,

    NavMenuComponent,

    HomeComponent,

    ListArticlesComponent,

    EditArticleComponent,

    ReadArticleComponent,

  ],

  imports: [

    BrowserModule.withServerTransition({ appId: 'ng-cli-universal' }),

    HttpClientModule,

    FormsModule,

    MatIconModule,    //*FAB Button

    MatButtonModule,  //*FAB Button

    ApiAuthorizationModule,

    AppRoutingModule

  ],

  providers: [

    { provide: HTTP_INTERCEPTORS, useClass: AuthorizeInterceptor, multi: true }

  ],

  bootstrap: [AppComponent]

})

export class AppModule { }