Not able to integrate with LDAP. 

1. 1. Error.

41 sptluvjenkins jenkins[3982]: 2022-09-02 13:42:41.891+0000 [id=69]#011WARNING#011o.e.j.s.h.ContextHandler$Context#log: Error while serving http://XX.XX.XX.XX:8080/descriptorByName/hudson.security.LDAPSecurityRealm/validate
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: java.lang.NullPointerException
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at hudson.security.LDAPSecuriityRealm$DescriptorImpl.validate(LDAPSecurityRealm.java:1594)

Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at java.base/java.lang.Thread.run(Thread.java:829)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: 2022-09-02 13:42:41.892+0000 [id=69]#011WARNING#011h.i.i.InstallUncaughtExceptionHandler#handleException: Caught unhandled exception with ID 5ace4cd9-f8f4-4ad7-9232-b7fe6ea42b7a
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: java.lang.NullPointerException
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at hudson.security.LDAPSecurityRealm$DescriptorImpl.validate(LDAPSecurityRealm.java:1594)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at hudson.security.LDAPSecurityRealm$DescriptorImpl.doValidate(LDAPSecurityRealm.java:1549)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at java.base/java.lang.invoke.MethodHandle.invokeWithArguments(MethodHandle.java:710)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.Function$MethodFunction.invoke(Function.java:397)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.Function$InstanceFunction.invoke(Function.java:409)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.interceptor.RequirePOST$Processor.invoke(RequirePOST.java:78)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.PreInvokeInterceptedFunction.invoke(PreInvokeInterceptedFunction.java:26)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.Function.bindAndInvoke(Function.java:207)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.Function.bindAndInvokeAndServeResponse(Function.java:140)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.MetaClass$11.doDispatch(MetaClass.java:558)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:59)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:766)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: Caused: javax.servlet.ServletException
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:816)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.Stapler.invoke(Stapler.java:898)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.MetaClass$4.doDispatch(MetaClass.java:289)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.NameBasedDispatcher.dispatch(NameBasedDispatcher.java:59)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.Stapler.tryInvoke(Stapler.java:766)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.Stapler.invoke(Stapler.java:898)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.Stapler.invoke(Stapler.java:694)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.kohsuke.stapler.Stapler.service(Stapler.java:240)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1631)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:157)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at jenkins.telemetry.impl.UserLanguages$AcceptLanguageFilter.doFilter(UserLanguages.java:129)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at jenkins.security.ResourceDomainFilter.doFilter(ResourceDomainFilter.java:81)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at hudson.util.PluginServletFilter$1.doFilter(PluginServletFilter.java:154)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at hudson.util.PluginServletFilter.doFilter(PluginServletFilter.java:160)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at hudson.security.csrf.CrumbFilter.doFilter(CrumbFilter.java:154)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:94)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at jenkins.security.AcegiSecurityExceptionFilter.doFilter(AcegiSecurityExceptionFilter.java:52)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at hudson.security.ChainedServletFilter$1.doFilter(ChainedServletFilter.java:99)
Sep  2 19:12:41 sptluvjenkins jenkins[3982]: #011at hudson.security.UnwrapSecurityExceptionFilter.doFilter(UnwrapSecurityExceptionFilter.java:54)