Edit (08/20/2020 14:12h):
I get more details due to HTML parse:
Uncaught Error: Template parse errors:
'mat-card-title' is not a known element:
1. If 'mat-card-title' is an Angular component, then verify that it is part of this module.
2. If 'mat-card-title' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message. ("
<mat-card>
  <mat-card-header>
    [ERROR ->]<mat-card-title>Login</mat-card-title>
  </mat-card-header>
  <mat-card-content>
"): ng:///AppModule/LoginComponent.html@11:4
'mat-card-header' is not a known element:
1. If 'mat-card-header' is an Angular component, then verify that it is part of this module.
2. If 'mat-card-header' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message. ("
UPDATED:
I fix most of the problem. Now the case is about @angular/cdk packages:
node_modules/@angular/cdk/tree/padding.d.ts:36:9 - error TS1086: An accessor cannot be declared in an ambient context.
36     set indent(indent: number | string);
           ~~~~~~
node_modules/@angular/cdk/tree/toggle.d.ts:17:9 - error TS1086: An accessor cannot be declared in an ambient context.
17     get recursive(): boolean;
           ~~~~~~~~~
node_modules/@angular/cdk/tree/toggle.d.ts:18:9 - error TS1086: An accessor cannot be declared in an ambient context.
18     set recursive(value: boolean);
           ~~~~~~~~~
node_modules/@angular/cdk/tree/tree.d.ts:37:9 - error TS1086: An accessor cannot be declared in an ambient context.
37     get dataSource(): DataSource<T> | Observable<T[]> | T[];
           ~~~~~~~~~~
node_modules/@angular/cdk/tree/tree.d.ts:38:9 - error TS1086: An accessor cannot be declared in an ambient context.
38     set dataSource(dataSource: DataSource<T> | Observable<T[]> | T[]);
           ~~~~~~~~~~
node_modules/@angular/cdk/tree/tree.d.ts:103:9 - error TS1086: An accessor cannot be declared in an ambient context.
103     get data(): T;
            ~~~~
node_modules/@angular/cdk/tree/tree.d.ts:104:9 - error TS1086: An accessor cannot be declared in an ambient context.
104     set data(value: T);
            ~~~~
node_modules/@angular/cdk/tree/tree.d.ts:106:9 - error TS1086: An accessor cannot be declared in an ambient context.
106     get isExpanded(): boolean;
            ~~~~~~~~~~
node_modules/@angular/cdk/tree/tree.d.ts:107:9 - error TS1086: An accessor cannot be declared in an ambient context.
107     get level(): number;
CMD Console
npm WARN karma-jasmine-html-reporter@1.5.4 requires a peer of jasmine-core@>=3.5 but none is installed. You must install peer dependencies yourself.
npm WARN @angular/cdk@10.1.3 requires a peer of @angular/core@^10.0.0 || ^11.0.0-0 but none is installed. You must install peer dependencies yourself.
npm WARN @angular/cdk@10.1.3 requires a peer of @angular/common@^10.0.0 || ^11.0.0-0 but none is installed. You must install peer dependencies yourself.
npm WARN @angular/material@8.2.3 requires a peer of @angular/cdk@8.2.3 but none is installed. You must install peer dependencies yourself.
Is there any solution for that? Thanks! :)
Seeing these questions about this subject: @angular/material/index.d.ts' is not a module, How to import Angular Material in project?, and implementing the module as it follows, the compiler gave me an error.
angular-material.module.ts
import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import {
  MatCardModule,
  MatDialogModule,
  MatMenuModule,
   MatButtonModule,
   MatToolbarModule,
   MatIconModule,
   MatBadgeModule,
   MatSidenavModule,
   MatListModule,
   MatGridListModule,
   MatFormFieldModule,
   MatInputModule,
   MatSelectModule,
   MatRadioModule,
   MatDatepickerModule,
   MatNativeDateModule,
   MatChipsModule,
   MatTooltipModule,
   MatTableModule,
   MatPaginatorModule,
   MatProgressSpinnerModule
} from '@angular/material';
@NgModule({
   imports: [
    MatCardModule, 
    MatDialogModule, 
    MatMenuModule,
    MatProgressSpinnerModule,
      CommonModule,
      MatButtonModule,
      MatToolbarModule,
      MatIconModule,
      MatSidenavModule,
      MatBadgeModule,
      MatListModule,
      MatGridListModule,
      MatFormFieldModule,
      MatInputModule,
      MatSelectModule,
      MatRadioModule,
      MatDatepickerModule,
      MatNativeDateModule,
      MatChipsModule,
      MatTooltipModule,
      MatTableModule,
      MatPaginatorModule
   ],
   exports: [
    MatCardModule, 
    MatDialogModule, 
    MatMenuModule,
    MatProgressSpinnerModule,
      MatButtonModule,
      MatToolbarModule,
      MatIconModule,
      MatSidenavModule,
      MatBadgeModule,
      MatListModule,
      MatGridListModule,
      MatInputModule,
      MatFormFieldModule,
      MatSelectModule,
      MatRadioModule,
      MatDatepickerModule,
      MatChipsModule,
      MatTooltipModule,
      MatTableModule,
      MatPaginatorModule
   ],
   providers: [
      MatDatepickerModule,
   ]
})
export class AngularMaterialModule { }
Lately, in package.json I added like this to put an older version compatible with node_modules/@angular/material/index.d.ts:
"dependencies": {
    "@angular/animations": "~8.2.14",
    "@angular/common": "~8.2.14",
    "@angular/compiler": "~8.2.14",
    "@angular/core": "~8.2.14",
    "@angular/forms": "~8.2.14",
    "@angular/material": "^8.2.3",
    "@angular/platform-browser": "~8.2.14",
    "@angular/platform-browser-dynamic": "~8.2.14",
    "@angular/router": "~8.2.14",
    "chokidar": "^3.4.2",
    "core-js": "^3.6.5",
    "rxjs": "~6.4.0",
    "tslib": "^1.10.0",
    "zone.js": "~0.9.1"
  },
Finally, in app.module.ts I added the dependency file:
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { LoginComponent } from './login/login.component';
import { LogoutComponent } from './logout/logout.component';
import { AngularMaterialModule } from './angular-material.module';
import {HTTP_INTERCEPTORS, HttpClientModule} from '@angular/common/http';
import { HeaderComponent } from './header/header.component';
import { UserComponent } from './user/user.component';
import { FooterComponent } from './footer/footer.component';
import {BasicAuthHtppInterceptorService} from './service/basic-auth-interceptor.service';
My app structure is similar to this:

What should I do in order to display the HTML tags on this version?
 
    