TypeError: PlotlyService.plotly.purge is not a function

Getting this error when switching active submodules

core.js:6486 ERROR Error: Uncaught (in promise): TypeError: PlotlyService.plotly.purge is not a function
TypeError: PlotlyService.plotly.purge is not a function
    at Function.remove (:4200/default-src_app_service_comp-reg_service_ts.js:25186)
    at PlotlyComponent.ngOnDestroy (:4200/default-src_app_service_comp-reg_service_ts.js:25348)
    at executeOnDestroys (:4200/vendor.js:32351)
    at cleanUpView (:4200/vendor.js:32254)
    at destroyViewTree (:4200/vendor.js:32080)
    at destroyLView (:4200/vendor.js:32232)
    at RootViewRef.destroy (:4200/vendor.js:47596)
    at ComponentRef$1.destroy (:4200/vendor.js:50130)
    at RouterOutlet.deactivate (:4200/vendor.js:93334)
    at ActivateRoutes.deactivateRouteAndOutlet (:4200/vendor.js:89858)
    at resolvePromise (:4200/polyfills.js:1222)
    at resolvePromise (:4200/polyfills.js:1176)
    at :4200/polyfills.js:1288
    at ZoneDelegate.invokeTask (:4200/polyfills.js:415)
    at Object.onInvokeTask (:4200/vendor.js:53612)
    at ZoneDelegate.invokeTask (:4200/polyfills.js:414)
    at Zone.runTask (:4200/polyfills.js:187)
    at drainMicroTaskQueue (:4200/polyfills.js:591)
defaultErrorLogger @ core.js:6486

Submodule config:

...
import { PlotlyViaCDNModule } from 'angular-plotly.js';

PlotlyViaCDNModule.setPlotlyVersion('latest');
PlotlyViaCDNModule.setPlotlyBundle('finance');

@NgModule({
  declarations: [
    DcComponent,
    DcChartComponent,
    ...
  ],
  imports: [
    CommonModule,
    DcRoutingModule,
    ...
    PlotlyViaCDNModule,
    ...
  ]
  ...
}
export class DcModule { }

Note that the scenario is that the Plotly Data Card is configured and saved in one module, then dynamically loaded and displayed in another module. The error occurs sometimes when switching contexts (modules). I guess when the second by loading order is first loaded.

Env:

$ npm list angular-plotly.js
...
└── angular-plotly.js@4.0.4 

$ ng version

     _                      _                 ____ _     ___
    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                |___/
    

Angular CLI: 12.2.12
Node: 14.17.0
Package Manager: npm 7.20.5
OS: linux x64

Angular: 12.2.12
... animations, cdk, cli, common, compiler, compiler-cli, core
... forms, language-service, material, platform-browser
... platform-browser-dynamic, router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1202.12
@angular-devkit/build-angular   12.2.12
@angular-devkit/core            12.2.12
@angular-devkit/schematics      12.2.12
@angular/flex-layout            12.0.0-beta.35
@schematics/angular             12.2.12
rxjs                            6.6.7
typescript                      4.3.5
    

Thanks.

先重現動態模組切換的情境，然後在 angular-plotly.js 中追蹤 PlotlyComponent.ngOnDestroy 和 PlotlyService.plotly.purge。比較 PlotlyViaCDNModule 在兩個模組中的設定與載入方式；當切換內容不再引發 purge TypeError 時即表示完成。