Undefined table: 7 ERROR: relation "roles" does not exist

I have a problem using Laravel 5.i connected Postgres database its connected successfully and When I run "php artisan migrate", I got this error

same error I got when I try with MySQL DB also.

In Connection.php line 664:
SQLSTATE[42P01]: Undefined table: 7 ERROR:  relation "roles" does not exist
LINE 1: select * from "roles"
                    ^ (SQL: select * from "roles")

I have the following Migration tables:

class CreateRolesTable extends Migration
{
/**
 * Run the migrations.
 *
 * @return void
 */
public function up()
{
    Schema::create('roles', function (Blueprint $table) {
        $table->increments('id');
        $table->string('name');
        $table->string('zip')->unique();
        $table->string('description')->nullbale();
        $table->boolean('system')->nullable()->default(true);
    });
}

/**
 * Reverse the migrations.
 *
 * @return void
 */
public function down()
{
    Schema::dropIfExists('roles');
}
}

How to fix it?

via Chebli Mohamed