Laravel/DBにテーブル作成

コマンドライン
htdocs/laravel
php artisan meke:migration create_posts_table
/datebase/migrations/create_posts_table.php
public function up()
{
    Schema::create('posts', function (Blueprint $table) {
        $table->bigIncrements('id');
        $table->bigInteger('user_id')->unsigned()->index();
        $table->bigInteger('category_id')->unsigned()->index();
        $table->string('title')->nullable();
        $table->text('content')->nullable();
        $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
        $table->foreign('category_id')->references('id')->on('categories')->onDelete('cascade');
        $table->timestamps();
    });
}
	
コマンドライン
/
php artisan migrate
error
//テーブル消去
php artisan migrate:refresh

/config/database.php
'charset' => 'utf8',
'collation' => 'utf8_unicode_ci',