Se arroja una excepcion cuando se intente crear un admin con un email que ya existe

    };

    const hashedPwd = await this.encryptionService.hashPassword(createAdminDto.password);

    createAdminDto.password = hashedPwd;

    if (await this.adminService.adminExists(createAdminDto.email)) {

      throw new HttpException('Admin already exists', HttpStatus.UNAUTHORIZED);

    }

    await this.adminService.create(createAdminDto);

    const adminSigninResDto: AdminSigninResDto = await this.signIn(loginAdminDto);