[formGroup] erro

alguém sabe qual é meu problema?

compiler.js:1021 Uncaught Error: Template parse errors:
Can't bind to 'formGroup' since it isn't a known property of 'form'. ("<form [ERROR ->][formGroup] ="formulario" class= "container" action="">
    <div id="title">
        <h2 class="h2 te"): ng:///SocioModule/CadastrarSocioComponent.html@0:6
No provider for ControlContainer ("[ERROR ->]<form [formGroup] ="formulario" class= "container" action="">
    <div id="title">
        <h2 class="): ng:///SocioModule/CadastrarSocioComponent.html@0:0
No provider for NgControl ("<div class="form-group col-md-6">
            <label for="nome">Digite seu nome</label>
            [ERROR ->]<input formControlName="nome" id="nome"type="text" class="form-control" placeholder="nome completo">
"): ng:///SocioModule/CadastrarSocioComponent.html@8:12
No provider for NgControl ("  <div class="form-group col-md-6">
            <label for="cpf">Digite seu CPF</label>
            [ERROR ->]<input formControlName="cpf" id="cpf" type="text" pattern="[0-9]{11}" class="form-control">
        <"): ng:///SocioModule/CadastrarSocioComponent.html@12:12
    at syntaxError (compiler.js:1021)
    at TemplateParser.push../node_modules/@angular/compiler/fesm5/compiler.js.TemplateParser.parse (compiler.js:14830)
    at JitCompiler.push../node_modules/@angular/compiler/fesm5/compiler.js.JitCompiler._parseTemplate (compiler.js:24018)
    at JitCompiler.push../node_modules/@angular/compiler/fesm5/compiler.js.JitCompiler._compileTemplate (compiler.js:24005)
    at compiler.js:23948
    at Set.forEach (<anonymous>)
    at JitCompiler.push../node_modules/@angular/compiler/fesm5/compiler.js.JitCompiler._compileComponents (compiler.js:23948)
    at compiler.js:23858
    at Object.then (compiler.js:1012)
    at JitCompiler.push../node_modules/@angular/compiler/fesm5/compiler.js.JitCompiler._compileModuleAndComponents (compiler.js:23857)

component:

import { Component, Input } from '@angular/core';
import { FormGroup ,FormBuilder , Validators } from '@angular/forms'
import { OnInit } from '@angular/core';



@Component ({
    selector: 'vox-socio',
    templateUrl: './cadastrarSocio.component.html',
    styleUrls: ['./cadastrarSocio.component.css']
})
export class CadastrarSocioComponent implements OnInit{

    formulario : FormGroup;

    constructor(private formBuilder: FormBuilder){}

    ngOnInit(): void {
        this.formulario = this.formBuilder.group({
            nome: ['', 
                    [
                        Validators.required,
                        Validators.maxLength(255)
                    ],
            ],
            cpf: ['',
                    [
                        Validators.required,
                        Validators.pattern('[0-9]{11}')
                    ]
            ]
        });
    }


}

HTML:

<form [formGroup] ="formulario" class= "container" action="">
    <div id="title">
        <h2 class="h2 text-center">Vox Tecnologia</h2>
        <h5 class="h5 text-center">Cadastro de Sócios</h5>
    </div>
    <div class="form-row" id="formulario">
        <div class="form-group col-md-6">
            <label for="nome">Digite seu nome</label>
            <input formControlName="nome" id="nome"type="text" class="form-control" placeholder="nome completo">
        </div>
        <div class="form-group col-md-6">
            <label for="cpf">Digite seu CPF</label>
            <input formControlName="cpf" id="cpf" type="text" pattern="[0-9]{11}" class="form-control">
        </div>
        <button type="submit" class="btn btn-primary">cadastrar</button>
    </div>
</form>