Error while importing a component to another component in angular 7

Every time I try to import a component to another component (they are not siblings ) I got this error on console :

...
ERROR Error: "StaticInjectorError(AppModule)[LogsTableComponent -> FilterBarComponent]: 
StaticInjectorError(Platform: core)[LogsTableComponent -> FilterBarComponent]: 
NullInjectorError: No provider for FilterBarComponent!"
...

here is my app.module.ts file :

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { HttpClientModule } from '@angular/common/http';
import { AppComponent } from './app.component';
import { LogsTableComponent } from './components/logs-table/logs- 
table.component';
import { FilterBarComponent } from './components/filter-bar/filter- 
bar.component';
import { BsDatepickerModule } from 'ngx-bootstrap/datepicker';
import { HttpClientTestService } from './http-client-test.service';

@NgModule({
  declarations: [
    AppComponent,
    FilterBarComponent,
    LogsTableComponent,
  ],

  imports: [
    BrowserModule,
    // HttpClientModule should be imported after BrowserModule.
    HttpClientModule,

    BsDatepickerModule.forRoot()

  ],
  providers: [HttpClientTestService],
  bootstrap: [AppComponent]
})
export class AppModule { }

Can anyone help me to know why this error is occurring and how to resolve it.

This may be the key phrase: "No provider for FilterBarComponent!". I suppose, you should add the FilterBarComponent to the "imports/providers (?)" array in the "AppModule" file.