title: 'full-calendar' is not a known element:
body: <p>Hey I am new to Angular...
  So far I want to try out the fullcalendar. I try to run the module before and it works. However today I created a new Project and just followed the Steps which are described in the angular doc Furthermore I went trough all the steps in the fullcalendar doc but it is still not working. </p>
  
  <p>this is the error i am getting:</p>
  
  <pre><code>ERROR in src/app/app.component.html:1:1 - error NG8001: 'full-calendar' is not a known element:
  1. If 'full-calendar' is an Angular component, then verify that it is part of this module.
  2. If 'full-calendar' is a Web Component then add 'CUSTOM_ELEMENTS_SCHEMA' to the '@NgModule.schemas' of this component to suppress this message.
  
  1 &lt;full-calendar defaultView="dayGridMonth" [plugins]="calendarPlugins"&gt;&lt;/full-calendar&gt;
  </code></pre>
  
  <p>app.module.ts</p>
  
  <pre><code>import { BrowserModule } from '@angular/platform-browser';
  import { NgModule } from '@angular/core';
  import {FullCalendarModule} from '@fullcalendar/angular';
  import { AppComponent } from './app.component';
  
  @NgModule({
    declarations: [
      AppComponent
    ],
    imports: [
      BrowserModule,
      FullCalendarModule
    ],
    providers: [],
    bootstrap: [AppComponent]
  })
  export class AppModule { }
  </code></pre>
  
  <p>app.component.ts</p>
  
  <pre><code>import { Component } from '@angular/core';
  import dayGridPlugin from '@fullcalendar/daygrid';
  
  @Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
  })
  export class AppComponent {
    title = 'nachweis-frontend';
    calendarPlugins = [dayGridPlugin];
  }
  </code></pre>
  
  <p>app.component.html</p>
  
  <pre><code>&lt;full-calendar [plugins] = "calendarPlugins"&gt;&lt;/full-calendar&gt;
  </code></pre>
  
  <p>Here is also my angular json. I did no changes here:</p>
  
  <pre><code>{
    "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
    "version": 1,
    "newProjectRoot": "projects",
    "projects": {
      "nachweis-frontend": {
        "projectType": "application",
        "schematics": {},
        "root": "",
        "sourceRoot": "src",
        "prefix": "app",
        "architect": {
          "build": {
            "builder": "@angular-devkit/build-angular:browser",
            "options": {
              "outputPath": "dist/nachweis-frontend",
              "index": "src/index.html",
              "main": "src/main.ts",
              "polyfills": "src/polyfills.ts",
              "tsConfig": "tsconfig.app.json",
              "aot": true,
              "assets": [
                "src/favicon.ico",
                "src/assets"
              ],
              "styles": [
                "src/styles.css"
              ],
              "scripts": []
            },
            "configurations": {
              "production": {
                "fileReplacements": [
                  {
                    "replace": "src/environments/environment.ts",
                    "with": "src/environments/environment.prod.ts"
                  }
                ],
                "optimization": true,
                "outputHashing": "all",
                "sourceMap": false,
                "extractCss": true,
                "namedChunks": false,
                "extractLicenses": true,
                "vendorChunk": false,
                "buildOptimizer": true,
                "budgets": [
                  {
                    "type": "initial",
                    "maximumWarning": "2mb",
                    "maximumError": "5mb"
                  },
                  {
                    "type": "anyComponentStyle",
                    "maximumWarning": "6kb",
                    "maximumError": "10kb"
                  }
                ]
              }
            }
          },
          "serve": {
            "builder": "@angular-devkit/build-angular:dev-server",
            "options": {
              "browserTarget": "nachweis-frontend:build"
            },
            "configurations": {
              "production": {
                "browserTarget": "nachweis-frontend:build:production"
              }
            }
          },
          "extract-i18n": {
            "builder": "@angular-devkit/build-angular:extract-i18n",
            "options": {
              "browserTarget": "nachweis-frontend:build"
            }
          },
          "test": {
            "builder": "@angular-devkit/build-angular:karma",
            "options": {
              "main": "src/test.ts",
              "polyfills": "src/polyfills.ts",
              "tsConfig": "tsconfig.spec.json",
              "karmaConfig": "karma.conf.js",
              "assets": [
                "src/favicon.ico",
                "src/assets"
              ],
              "styles": [
                "src/styles.css"
              ],
              "scripts": []
            }
          },
          "lint": {
            "builder": "@angular-devkit/build-angular:tslint",
            "options": {
              "tsConfig": [
                "tsconfig.app.json",
                "tsconfig.spec.json",
                "e2e/tsconfig.json"
              ],
              "exclude": [
                "**/node_modules/**"
              ]
            }
          },
          "e2e": {
            "builder": "@angular-devkit/build-angular:protractor",
            "options": {
              "protractorConfig": "e2e/protractor.conf.js",
              "devServerTarget": "nachweis-frontend:serve"
            },
            "configurations": {
              "production": {
                "devServerTarget": "nachweis-frontend:serve:production"
              }
            }
          }
        }
      }
    },
    "defaultProject": "nachweis-frontend",
    "cli": {
      "analytics": false
    }
  }
  </code></pre>