ng2-charts angular radar exception

Question

i want to display 2 component in a dashboard one radar and the other is line, so i have 3 separate component.

when i implemented the radar component i started to get this exception in the radar component.

ERROR NullInjectorError: StaticInjectorError(AppModule)[BaseChartDirective -> ThemeService]: 
  StaticInjectorError(Platform: core)[BaseChartDirective -> ThemeService]: 
    NullInjectorError: No provider for ThemeService!

i followed the docs provided in here: https://stackblitz.com/edit/ng2-charts-radar-template?file=src%2Fapp%2Fapp.component.ts .. i have no idea whats causing this problem..

Answer 1

finally i'v fixed this problem, only by adding providers:[ThemeService] in the app.modules.

i think this problem happens only on these version on angular 8 and ng2-chart 2.4.2