2FAuth/app/Http/Controllers/Auth/ForgotPasswordController.php

<?php

namespace App\Http\Controllers\Auth;

use Illuminate\Http\Request;
use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\SendsPasswordResetEmails;

class ForgotPasswordController extends Controller
{
    /*
    |--------------------------------------------------------------------------
    | Password Reset Controller
    |--------------------------------------------------------------------------
    |
    | This controller is responsible for handling password reset emails and
    | includes a trait which assists in sending these notifications from
    | your application to your users. Feel free to explore this trait.
    |
    */

    use SendsPasswordResetEmails;

    /**
     * Validate the email for the given request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return void
     */
    protected function validateEmail(Request $request)
    {
        $request->validate(['email' => 'required|exists:users,email']);
    }

    /**
     * Get the response for a successful password reset link.
     *
     * @param  \Illuminate\Http\Request $request
     * @param  string  $response
     * @return \Illuminate\Http\RedirectResponse
     */
    protected function sendResetLinkResponse(Request $request, $response)
    {
        return ['status' => trans($response)];
    }

    /**
     * Get the response for a failed password reset link.
     *
     * @param  \Illuminate\Http\Request $request
     * @param  string  $response
     * @return \Illuminate\Http\RedirectResponse
     * 
     * @codeCoverageIgnore Can't find how to test this :/
     */
    protected function sendResetLinkFailedResponse(Request $request, $response)
    {
        return response()->json(['requestFailed' => trans($response)], 400);
    }
}