Laravel error Specified Key was a too long error

This tutorial is for Laravel error Specified Key was a too long error.

Laravel Specified Key was a too-long error if your database table varchar type is 191 set. edit AppServiceProvider.php file and inside the boot.

Edit your AppServiceProvider.php(app/Providers/AppServiceProvider.php) file and inside the boot, the method set a default string length:

#app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;
use Illuminate\Support\Facades\Schema; //added

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        //
    }

    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        Schema::defaultStringLength(191); // Update defaultStringLength
    }
}