Answers for "turn on laravel debugbar"

disable laravel debugbar

Add DEBUGBAR_ENABLED=false to your .env

laravel debugbar

composer require barryvdh/laravel-debugbar --dev
  
// config/app.php
// ServiceProviders
Barryvdh\Debugbar\ServiceProvider::class,
// Facades
'Debugbar' => Barryvdh\Debugbar\Facade::class,


php artisan vendor:publish --provider="Barryvdh\Debugbar\ServiceProvider"