Confirming unset eamils throws NPE

{{java.lang.NullPointerException: null at pl.edu.icm.unity.engine.confirmation.facilities.BaseFacility.confirmAttributes(BaseFacility.java:90) ~[unity-server-engine-2.4.1.jar:?] at pl.edu.icm.unity.engine.confirmation.facilities.RegistrationReqAttributeFacility.confirmElements(RegistrationReqAttributeFacility.java:72) ~[unity-server-engine-2.4.1.jar:?] at pl.edu.icm.unity.engine.confirmation.facilities.RegistrationReqAttributeFacility.confirmElements(RegistrationReqAttributeFacility.java:38) ~[unity-server-engine-2.4.1.jar:?] at pl.edu.icm.unity.engine.confirmation.facilities.RegistrationFacility.doConfirm(RegistrationFacility.java:149) ~[unity-server-engine-2.4.1.jar:?] at pl.edu.icm.unity.engine.confirmation.facilities.RegistrationFacility.processConfirmation(RegistrationFacility.java:103) ~[unity-server-engine-2.4.1.jar:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_161] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_161] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_161] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_161] at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:338) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:197) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at com.sun.proxy.$Proxy64.processConfirmation(Unknown Source) ~[?:?] at pl.edu.icm.unity.engine.confirmation.ConfirmationManagerImpl.processConfirmationInternal(ConfirmationManagerImpl.java:294) ~[unity-server-engine-2.4.1.jar:?] at pl.edu.icm.unity.engine.confirmation.ConfirmationManagerImpl.lambda$processConfirmation$1(ConfirmationManagerImpl.java:274) ~[unity-server-engine-2.4.1.jar:?] at pl.edu.icm.unity.store.tx.DefaultTransactionalRunner.runInTransactionRetThrowing(DefaultTransactionalRunner.java:63) ~[unity-server-storage-2.4.1.jar:?] at sun.reflect.GeneratedMethodAccessor171.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_161] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_161] at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:338) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:197) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.aspectj.MethodInvocationProceedingJoinPoint.proceed(MethodInvocationProceedingJoinPoint.java:89) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at pl.edu.icm.unity.store.rdbms.tx.SQLTransactionEngine.runInTransaction(SQLTransactionEngine.java:45) ~[unity-server-storage-2.4.1.jar:?] at pl.edu.icm.unity.store.tx.TransactionalAspect.retryIfNeeded4Method(TransactionalAspect.java:75) ~[unity-server-storage-2.4.1.jar:?] at sun.reflect.GeneratedMethodAccessor28.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_161] at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_161] at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:643) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:632) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:70) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:174) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:185) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:212) ~[spring-aop-5.0.3.RELEASE.jar:5.0.3.RELEASE] at com.sun.proxy.$Proxy58.runInTransactionRetThrowing(Unknown Source) ~[?:?] at pl.edu.icm.unity.engine.confirmation.ConfirmationManagerImpl.processConfirmation(ConfirmationManagerImpl.java:261) ~[unity-server-engine-2.4.1.jar:?] at pl.edu.icm.unity.webui.confirmations.ConfirmationUI.appInit(ConfirmationUI.java:146) [unity-server-web-common-2.4.1.jar:?] at pl.edu.icm.unity.webui.UnityUIBase.init(UnityUIBase.java:77) [unity-server-web-common-2.4.1.jar:?] }}