Try fix Element not found bug - Second Try

src/app/rules/rules.component.spec.ts

-import { async, ComponentFixture, TestBed } from '@angular/core/testing';
+import { ComponentFixture, TestBed } from '@angular/core/testing';
 import { CUSTOM_ELEMENTS_SCHEMA, NO_ERRORS_SCHEMA } from '@angular/core';
 import { RulesComponent } from './rules.component';
 
@@ -7,16 +7,10 @@ describe('RulesComponent', () => {
   let component: RulesComponent;
   let fixture: ComponentFixture<RulesComponent>;
 
-  beforeEach(async(() => {
-    TestBed.configureTestingModule({
-      declarations: [ RulesComponent ],
-      schemas: [CUSTOM_ELEMENTS_SCHEMA, NO_ERRORS_SCHEMA]
-    }).compileComponents();
-  }));
-
   beforeEach(async () => {
     await TestBed.configureTestingModule({
-      declarations: [ RulesComponent ]
+      declarations: [ RulesComponent ],
+      schemas: [CUSTOM_ELEMENTS_SCHEMA, NO_ERRORS_SCHEMA]
     })
     .compileComponents();
   });