CommandController.php

<?php
// ...
class DoctorsController extends Controller
{
    public function store(Request $request)
    {
        try {
            $command = new CreateNewDoctorCommand($request->all());
            $command->handle();
        } catch (CommandException $commandException) {
            return redirect()->back()->with('errors', $commandException->getError())->withInput();
        }
        // ...
    }