php – Laravel 5.4迁移ENUM在MySQL中失败

当我尝试应用我的迁移时,我收到此错误：

[Doctrine\DBAL\DBALException]
UnkNown database type enum requested, Doctrine\DBAL\Platforms\MysqL57Platform may not support it.

应用迁移,在数据库上创建枚举列,我得到错误,因此我无法执行nexts迁移,因为此迁移会抛出此错误.

在服务器中,我的MysqL版本为5.7.17

这是我的迁移代码：

class AddDocumentUsersTable extends Migration
{
    /**
     * Run the migrations.
     *
     * @return void
     */
    public function up()
    {
        Schema::table('users', function (Blueprint $table) {
            $table->string('document', 9)->unique();
            $table->enum('document_type', ['dni', 'nie', 'nif', 'cif']);
        });
    }

    /**
     * Reverse the migrations.
     *
     * @return void
     */
    public function down()
    {
        Schema::table('users', function (Blueprint $table) {
            $table->dropColumn('document');
            $table->dropColumn('document_type');
        });
    }
}

谢谢