Can't start Laravel, I get "Base table or view not found" error

First I rolled back 2 migrations by mistake, then I ran php artisan migrate command and I got the following error: [Illuminate\Database\QueryException] SQLSTATE[42S02]: Base table or view not found: 1146 Table 'exercise1.categories' doesn't exist (SQL: select * from categories where parent_id = 0)

[PDOException] SQLSTATE[42S02]: Base table or view not found: 1146 Table 'exercise1.categories' doesn't exist Then I stopped Laravel. After that when I run the php artisan serve command for starting Laravel I get the same error. Here are 2 migrations which I've rolled back:

1.

class CreateCategoriesTable extends Migration
    {

        public function up()
        {
            Schema::create('categories',function (Blueprint $table){
                $table->increments('id');
                $table->string('name');
                $table->text('parent_id');
                $table->timestamps();
        });
        }
        public function down()
        {
            Schema::dropIfExists('categories');
        }
    }

2.

class CreateArticlesTable extends Migration
{
    public function up()
    {
        Schema::create('articles', function (Blueprint $table) {
            $table->increments('id');
            $table->string('title')->nullable(false);
            $table->longText('article')->nullable(false);
            $table->integer('user_id')->unsigned();
            $table->foreign('user_id')->references('id')->on('users')->onDelete('cascade');
            $table->timestamps();
        });
    }
    public function down()
    {
        Schema::dropIfExists('articles');
    }
}

Please help me to solve this frustrating problem. All answers are highly appreciated, thanks in advance.

via Mahammad Isgandarli