Quando eu coloco usuário e senha e aparece esse erro:
HttpErrorResponse {headers: HttpHeaders, status: 0, statusText: 'Unknown Error', url: 'http://localhost:3000/user/login', ok: false, …} error: ProgressEvent {isTrusted: true, lengthComputable: false, loaded: 0, total: 0, type: 'error', …} headers: HttpHeaders {normalizedNames: Map(0), lazyUpdate: null, headers: Map(0)} message: "Http failure response for http://localhost:3000/user/login: 0 Unknown Error" name: "HttpErrorResponse" ok: false status: 0 statusText: "Unknown Error" url: "http://localhost:3000/user/login"
