schema errors

ERROR in src/app/relationships/party-relationships/create-relationships/create-relationships.component.html:1:1 - error NG8001: 'tu-general-header' is not a known element:
1. If 'tu-general-header' is an Angular component, then verify that it is part of this module.
2. If 'tu-general-header' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.

1 <tu-general-header [breadcrumb]="breadcrumbsLinks">

Module

import { NgModule, NO_ERRORS_SCHEMA, CUSTOM_ELEMENTS_SCHEMA } from '@angular/core';
import { CommonModule } from '@angular/common';
import { MatFormFieldModule } from '@angular/material/form-field';
import { MatIconModule } from '@angular/material/icon';
import { MatInputModule } from '@angular/material/input';
import { MatButtonModule } from '@angular/material/button';
import { AgGridModule } from 'ag-grid-angular';
import { MatBadgeModule } from '@angular/material/badge';
import { MatDatepickerModule } from '@angular/material/datepicker';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { MatNativeDateModule } from '@angular/material/core';
import { MatListModule } from '@angular/material/list';
import { MatProgressSpinnerModule } from '@angular/material/progress-spinner';
import { MatTabsModule } from '@angular/material/tabs';
import { MatSelectModule } from '@angular/material/select';
import { MatAutocompleteModule } from '@angular/material/autocomplete';
import { NgbDropdownModule, NgbModule, NgbTabsetModule } from '@ng-bootstrap/ng-bootstrap';
import { MatProgressBarModule } from '@angular/material/progress-bar';
import { MatTableModule } from '@angular/material/table';
import { MatTooltipModule } from '@angular/material/tooltip';
import { NgSelectModule } from '@ng-select/ng-select';
import { MatRadioModule } from '@angular/material/radio';
import { ColorPickerModule } from 'ngx-color-picker';

import {
  TableWebComponent, ProductHoverSummaryComponent, BadgeWebComponent, FilterChecklistItemComponent, ReportingChartsComponent, RelationshipTypeComponent, TabWebComponent,
  GroupDropdownWebComponent, SearchBarWebComponent, TableStatusWebComponent,
  ButtonOrderDetailComponent, OrderTotalComponent, ProgressbarComponent,
  CaretDropDownComponent, PopOverWebComponent,
  IconComponent, BreadcrumbsComponent,
  InfoSideMenuComponent, HeadingComponent, InpageAlertComponent, OPTWebComponent,
  ProductOverviewComponent, ButtonDropdownComponent, GeneralPageComponent, QuickActionPanelListItemComponent,
  TableLoadingOverlayComponent, TableNoRowOverlayComponent, ReportingBadgeComponent, GraphFilterComponent,
  DashboardStatusCardComponent, SummaryStatusListComponent, FooterComponent,
  ColorPickerComponent, ImageUploadComponent, 
} from './components';

import { GeneralHeaderComponent } from './components/general/general-header/general-header.component';

import { HoverDirective, WindowReloadAlertDirective, ConfirmDirective } from './directive';
import { GeneralListComponent } from './components/general/general-list';

import { NgxChartsModule } from '@swimlane/ngx-charts';
import { NgxFlowModule, FlowInjectionToken } from '@flowjs/ngx-flow';
import Flow from '@flowjs/flow.js';

@NgModule({
  imports: [
    CommonModule,
    MatInputModule,
    MatFormFieldModule,
    MatIconModule,
    MatButtonModule,
    MatBadgeModule,
    MatDatepickerModule,
    MatNativeDateModule,
    NgxChartsModule,
    NgxFlowModule,
    AgGridModule.withComponents(
      [
        TableWebComponent,
        SearchBarWebComponent,
      ]),
    FormsModule,
    MatTabsModule,
    MatSelectModule,
    MatAutocompleteModule,
    NgbDropdownModule,
    NgbModule,
    NgbTabsetModule,
    MatListModule,
    MatProgressBarModule,
    MatTableModule,
    ReactiveFormsModule,
    MatTooltipModule,
    NgSelectModule,
    MatProgressSpinnerModule,
    MatRadioModule,
    ColorPickerModule
  ],

  declarations: [
    TableWebComponent, ProductHoverSummaryComponent, BadgeWebComponent, FilterChecklistItemComponent, ReportingChartsComponent,
    RelationshipTypeComponent,
    TabWebComponent,
    GroupDropdownWebComponent, SearchBarWebComponent, TableStatusWebComponent,
    QuickActionPanelListItemComponent, ButtonOrderDetailComponent, OrderTotalComponent, ProgressbarComponent,
    CaretDropDownComponent, PopOverWebComponent,
    IconComponent, HoverDirective,
    BreadcrumbsComponent,
    InfoSideMenuComponent, BreadcrumbsComponent, InfoSideMenuComponent, HeadingComponent,
    InpageAlertComponent, TableLoadingOverlayComponent, TableNoRowOverlayComponent, ReportingBadgeComponent, GraphFilterComponent,
    DashboardStatusCardComponent, SummaryStatusListComponent,
    OPTWebComponent, ProductOverviewComponent, GeneralListComponent,
    GeneralHeaderComponent, ButtonDropdownComponent, GeneralPageComponent, WindowReloadAlertDirective,
    ConfirmDirective, FooterComponent, ColorPickerComponent, ImageUploadComponent
  ],

  exports: [
    TableWebComponent, ProductHoverSummaryComponent, BadgeWebComponent, FilterChecklistItemComponent, ReportingChartsComponent,
    RelationshipTypeComponent, TabWebComponent, GroupDropdownWebComponent, TableLoadingOverlayComponent, TableNoRowOverlayComponent, ReportingBadgeComponent, GraphFilterComponent,
    DashboardStatusCardComponent, SummaryStatusListComponent, SearchBarWebComponent, TableStatusWebComponent,
    ButtonOrderDetailComponent, OrderTotalComponent, ProgressbarComponent, CaretDropDownComponent, PopOverWebComponent, NgbDropdownModule,
    NgbModule, IconComponent, HoverDirective, BreadcrumbsComponent, QuickActionPanelListItemComponent, InfoSideMenuComponent, HeadingComponent, InpageAlertComponent, OPTWebComponent, ProductOverviewComponent,
    GeneralListComponent, GeneralHeaderComponent, ButtonDropdownComponent, GeneralPageComponent, WindowReloadAlertDirective,
    ConfirmDirective, FooterComponent, ColorPickerComponent, ImageUploadComponent
  ],

  entryComponents: [TableStatusWebComponent,
    IconComponent, TableLoadingOverlayComponent, TableNoRowOverlayComponent, ReportingBadgeComponent, GraphFilterComponent,
    RelationshipTypeComponent, GeneralHeaderComponent],
  providers: [MatDatepickerModule, {
    provide: FlowInjectionToken,
    useValue: Flow
  }],
  schemas: [CUSTOM_ELEMENTS_SCHEMA, NO_ERRORS_SCHEMA]
})

export class WebThemeModule { }

package json

{
  "name": "testing",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "~9.1.4",
    "@angular/common": "~9.1.4",
    "@angular/compiler": "~9.1.4",
    "@angular/core": "~9.1.4",
    "@angular/forms": "~9.1.4",
    "@angular/platform-browser": "~9.1.4",
    "@angular/platform-browser-dynamic": "~9.1.4",
    "@angular/router": "~9.1.4",
    "rxjs": "~6.5.4",
    "tslib": "^1.10.0",
    "zone.js": "~0.10.2",
    "@angular/cdk": "~9.2.4",
    "@angular/http": "~8.0.0-beta.10",
    "@agm/core": "^1.0.0-beta.5",
    "@angular/material": "^9.2.4",
    "@angular/service-worker": "~9.1.7",
    "@flowjs/flow.js": "^2.13.2",
    "@flowjs/ngx-flow": "^0.4.1",
    "@netbasal/ngx-content-loader": "^3.0.0",
    "@ng-bootstrap/ng-bootstrap": "^6.1.0",
    "@ng-select/ng-select": "^4.0.0",
    "@ngx-loading-bar/core": "^4.2.0",
    "@ngx-loading-bar/http": "^4.2.0",
    "@ngx-loading-bar/http-client": "^4.2.0",
    "@ngx-loading-bar/router": "^4.2.0",
    "@rxweb/reactive-form-validators": "^2.0.0-rc2",
    "@swimlane/ngx-charts": "^14.0.0",
    "@types/color": "^3.0.0",
    "ag-grid-angular": "^23.1.1",
    "ag-grid-community": "^23.1.1",
    "angular2-image-upload": "^1.0.0-rc.2",
    "angular2-promise-buttons": "^4.0.6",
    "bootstrap": "^4.4.1",
    "color": "^3.1.0",
    "core-js": "^3.6.5",
    "google-libphonenumber": "^3.2.8",
    "intl-tel-input": "^17.0.0",
    "js-data": "file:js-data.tar.gz",
    "js-data-http": "file:js-data-http.tar.gz",
    "ngx-bootstrap": "^5.6.1",
    "ngx-color-picker": "^9.1.0",
    "ngx-intl-tel-input": "^2.1.2",
    "ngx-perfect-scrollbar": "^9.0.0",
    "reflect-metadata": "~0.1.8"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.901.4",
    "@angular/cli": "~9.1.4",
    "@angular/compiler-cli": "~9.1.4",
    "@angular/language-service": "~9.1.4",
    "@types/googlemaps": "^3.30.16",
    "@types/jasmine": "~3.5.0",
    "@types/jasminewd2": "~2.0.3",
    "@types/lodash": "^4.14.119",
    "@types/node": "^12.12.41",
    "@typescript-eslint/eslint-plugin": "^2.18.0",
    "@typescript-eslint/parser": "^2.18.0",
    "codelyzer": "^5.1.2",
    "eslint": "^7.0.0",
    "jasmine-core": "~3.5.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~5.0.0",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage-istanbul-reporter": "~2.1.0",
    "karma-jasmine": "~3.0.1",
    "karma-jasmine-html-reporter": "^1.4.2",
    "protractor": "~5.4.3",
    "ts-node": "~8.3.0",
    "tslint": "~6.1.0",
    "typescript": "~3.8.3"
  }
}

tsconfig.json

{
  "compileOnSave": false,
  "compilerOptions": {
    "baseUrl": "./src/",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "downlevelIteration": true,
    "experimentalDecorators": true,
    "module": "esnext",
    "moduleResolution": "node",
    "importHelpers": true,
    "target": "es2015",
    "lib": [
      "es2018",
      "dom",
      "esnext"
  ],
    "paths": {
      "@tu/*": ["app/*"],
      "~/*": ["./*"],
      "*": ["./node_modules/tns-core-modules/*", "./node_modules/*"]
    }
  },
  "angularCompilerOptions": {
    "fullTemplateTypeCheck": false,
    "strictInjectionParameters": false
  }
}

[zeesulehria]

@pkozlowski-opensource this component is known element errors are occurring after upgrading to Angular 9. The same was working well in Angular 8. Can you point to some related migration error?

[angular-automatic-lock-bot[bot]]

This issue has been automatically locked due to inactivity. Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}