CAPTCHA does not display when create the account

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X EE, Master
• Fix Version/s: 7.0.0 DXP FP22, 7.0.0 DXP SP4, 7.0.X EE, 7.0.4 CE GA5, 7.1.X, Master
• Component/s: User Management
• Labels:
  • QA-AUTOMATION
  • ee-ts
  • liferay-digital-enterprise-70-sp4
  • liferay-fixpack-de-22-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 5
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/49960

Steps to reproduce:

1. Start portal, press sign in link.
2. Press create account.
3. Fill all field and check the CAPTCHA.

Expected result:
CAPTCHA displays.

Actual result:
CAPTCHA does not display.

Notes: If user press the refresh button, exception occurred.

07:55:25,971 ERROR [http-nio-8080-exec-1][CaptchaMVCResourceCommand:52] java.lang.UnsupportedOperationException
java.lang.UnsupportedOperationException
	at com.liferay.captcha.recaptcha.ReCaptchaImpl.serveImage(ReCaptchaImpl.java:88)
	at com.liferay.login.web.internal.portlet.action.CaptchaMVCResourceCommand.serveResource(CaptchaMVCResourceCommand.java:47)
	at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.callResourceMethod(MVCPortlet.java:442)
	at com.liferay.portal.kernel.portlet.LiferayPortlet.serveResource(LiferayPortlet.java:140)
	at com.liferay.portal.kernel.portlet.bridges.mvc.MVCPortlet.serveResource(MVCPortlet.java:342)
	at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:122)
	at com.liferay.portlet.ScriptDataPortletFilter.doFilter(ScriptDataPortletFilter.java:85)
	at com.liferay.portlet.FilterChainImpl.doFilter(FilterChainImpl.java:116)
	at com.liferay.portal.kernel.portlet.PortletFilterUtil.doFilter(PortletFilterUtil.java:71)
	at com.liferay.portal.kernel.servlet.PortletServlet.service(PortletServlet.java:108)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)