import { NgModule }       from '@angular/core';
import { CommonModule }   from '@angular/common';
import { MaterialModule } from '@angular/material';
import { FlexLayoutModule } from '@angular/flex-layout';
import { TranslateModule } from '@ngx-translate/core';

import { SongModule } from '../song/song.module';

import { BandComponent } from './band.component';

import { BandRoutingModule } from './band-routing.module';

@NgModule({
  imports: [
    CommonModule,
    MaterialModule,
    FlexLayoutModule,
    TranslateModule,
    SongModule,
    BandRoutingModule
  ],
  declarations: [
    BandComponent
  ]
})

export class BandModule {}

import { NgModule }       from '@angular/core';
import { CommonModule }   from '@angular/common';
import { MaterialModule } from '@angular/material';
import { FlexLayoutModule } from '@angular/flex-layout';

import { SongModule } from '../song/song.module';

import { BandComponent } from './band.component';

import { BandRoutingModule } from './band-routing.module';

@NgModule({
  imports: [
    CommonModule,
    MaterialModule,
    FlexLayoutModule,
    SongModule,
    BandRoutingModule
  ],
  declarations: [
    BandComponent
  ]
})

export class BandModule {}

--- 
+++ 
@@ -2,6 +2,7 @@
 import { CommonModule }   from '@angular/common';
 import { MaterialModule } from '@angular/material';
 import { FlexLayoutModule } from '@angular/flex-layout';
+import { TranslateModule } from '@ngx-translate/core';
 
 import { SongModule } from '../song/song.module';
 
@@ -14,6 +15,7 @@
     CommonModule,
     MaterialModule,
     FlexLayoutModule,
+    TranslateModule,
     SongModule,
     BandRoutingModule
   ],
Add missing TranslateModule in BandModule
