ERRO Integrity constraint violation

Illuminate\Database\QueryException SQLSTATE[23000]: Integrity constraint violation: 19 NOT NULL constraint failed: users.email (SQL: INSERT INTO users (name) VALUES (rtefadsfasdf))

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use DB;

class HomeController extends Controller
{
    public function index()
    {
        $title = 'Primeiro Projeto Laravel';

        return view('home.banner')->with('title', $title);
    }

    public function store(Request $request)
    {
        $nameUser = $request->input('name');
        if(DB::insert('INSERT INTO users (name) VALUES (?)',[$nameUser])){
            return 'OK';
        }else{
            return 'ERROR INSERT NOT WORK';
        }
    }
}

eu nao mudei a tabela como vc fez, eu só usei ja o que vinha a tabela de usuários