Don't allow requests to image captcha if provider is different

	 * @NoCSRFRequired

	 */

	public function captcha(): Http\DataDisplayResponse {

		$captchaValue = $this->captchaService->generateCaptcha();

		// Don't allow requests to image captcha if different provider is set

		if ($this->getCaptchaProvider() !== self::DEFAULT_CAPTCHA_PROVDER) {

			$response = new DataResponse();

			$response->setStatus(400);

			return $response;

		}

		$captchaValue = $this->captchaService->generateCaptcha();

		$response = new Http\DataDisplayResponse($captchaValue, Http::STATUS_OK, ['Content-Type' => 'image/png']);

		return $response;

	}

	/**