Erro all parameters

Ver se esse link te ajuda em algo: https://stackoverflow.com/questions/58039970/uncaught-error-cant-resolve-all-parameters-for-logincomponent-in-angular

Já estou usando o providedIn:'root'.

------------------------------Tá aí a minha autenticacao.service.ts:

import { Injectable } from '@angular/core'; import { HttpClient } from '@angular/common/http'; import { Observable } from 'rxjs';

@Injectable({ providedIn: 'root', }) export class AutenticacaoService {

constructor(private httpClient: HttpClient) {}

autenticar(usuario:string, senha:string):Observable{ return this.httpClient.post('http://localhost:3000/user/login',{ userName:usuario, password:senha }); } }

----------------------E aqui a minha login.component.ts:

import { Component, OnInit } from '@angular/core';

import { AutenticacaoService } from 'src/app/autenticacao/autenticacao.service';

@Component({ selector: 'app-login', templateUrl: './login.component.html', styleUrls: ['./login.component.css'] }) export class LoginComponent implements OnInit {

usuario = '';
senha = '';

constructor(private authService:AutenticacaoService) {}

ngOnInit(): void{ }

login(){
  this.authService.autenticar(this.usuario, this.senha).subscribe(()=> {
      console.log('Usuário autenticado com sucesso');
    }, (error) => {
      alert('Usuário ou senha inválido');
      console.log(error);
    }
  );
}

}

Opa! Resolvido. O lance é ajustar as versões. Deixo aqui, caso alguém precise: package.json: { "name": "gatitobook", "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": "11.0.0", "@angular/common": "11.0.0", "@angular/compiler": "11.0.0", "@angular/core": "11.0.0", "@angular/forms": "11.0.0", "@angular/platform-browser": "11.0.0", "@angular/platform-browser-dynamic": "11.0.0", "@angular/router": "11.0.0", "bootstrap": "^4.5.3", "font-awesome": "^4.7.0", "rxjs": "6.6.0", "tslib": "^2.0.0", "zone.js": "0.10.2" }, "devDependencies": { "@angular-devkit/build-angular": "0.1100.0", "@angular/cli": "11.0.0", "@angular/compiler-cli": "11.0.0", "@types/jasmine": "3.6.0", "@types/node": "^12.11.1", "codelyzer": "^6.0.0", "jasmine-core": "3.6.0", "jasmine-spec-reporter": "5.0.0", "karma": "5.1.0", "karma-chrome-launcher": "3.1.0", "karma-coverage": "2.0.3", "karma-jasmine": "4.0.0", "karma-jasmine-html-reporter": "^1.5.0", "protractor": "7.0.0", "ts-node": "8.3.0", "tslint": "6.1.0", "typescript": "4.0.2" } }