RS change email workflow

2017-11-14 17:23:20,676 [ajp-nio2-8036-exec-91] ERROR AssertException - OLAT::ERROR ^%^ N36-E15 ^%^ org.olat.core.logging 

https://xyz.olat.com/dmz/1%3A1%3Aoolat_login%3A1%3A0%3Aofo_%3Afid/
Mozilla/5.0 (Windows NT 6.3; WOW64; Trident/7.0; rv:11.0) like Gecko
**RedScreen** findIdentitybyName: name was null

<dispatchinfo>
	<componentinfo>
		<compname>ffo_main_vertical</compname>
		<compclass>org.olat.core.gui.components.form.flexible.impl.FormWrapperContainer</compclass>
		<extendedinfo>n/a</extendedinfo>
		<event>
			<class&gt;org.olat.core.gui.control.Event</class&gt;
			<command>validation ok</command>
			<tostring>com:validation ok,org.olat.core.gui.control.Event@d62b3f02</tostring>
		</event>
	</componentinfo>
	<controllerinfo>
		<controllername>org.olat.login.auth.OLATAuthentcationForm</controllername>
		<controllername>org.olat.login.LoginAuthprovidersController</controllername>
		<controllername>org.olat.core.commons.fullWebApp.BaseFullWebappController</controllername>
	</controllerinfo>
</dispatchinfo> 
>>> stack of 1.cause::org.olat.core.logging.AssertException: findIdentitybyName: name was null
-> at org.olat.basesecurity.BaseSecurityManager.findIdentityByName(BaseSecurityManager.java:941)
   at org.olat.login.auth.OLATAuthManager.findIdentInChangingEmailWorkflow(OLATAuthManager.java:170)
   at org.olat.login.auth.OLATAuthManager.authenticate(OLATAuthManager.java:120)
   at org.olat.login.OLATAuthenticationController.event(OLATAuthenticationController.java:191)
   at org.olat.core.gui.control.DefaultController$1.run(DefaultController.java:246)
   at org.olat.core.logging.activity.ThreadLocalUserActivityLoggerInstaller.runWithUserActivityLogger(ThreadLocalUserActivityLoggerInstaller.java:108)
   at org.olat.core.gui.control.DefaultController.dispatchEvent(DefaultController.java:243)
   at org.olat.core.gui.control.DefaultController.fireEvent(DefaultController.java:190)
   at org.olat.login.auth.OLATAuthentcationForm.formOK(OLATAuthentcationForm.java:93)
   at org.olat.core.gui.components.form.flexible.impl.FormBasicController.event(FormBasicController.java:380)
   at org.olat.core.gui.control.DefaultController.dispatchEvent(DefaultController.java:202)
>>> stack of 2.cause::java.lang.Exception: assertionstackgenerator
-> at org.olat.core.logging.AssertException.<init>(AssertException.java:53)
   at org.olat.basesecurity.BaseSecurityManager.findIdentityByName(BaseSecurityManager.java:941)
   at org.olat.login.auth.OLATAuthManager.findIdentInChangingEmailWorkflow(OLATAuthManager.java:170)
   at org.olat.login.auth.OLATAuthManager.authenticate(OLATAuthManager.java:120)
   at org.olat.login.OLATAuthenticationController.event(OLATAuthenticationController.java:191)
   at org.olat.core.gui.control.DefaultController$1.run(DefaultController.java:246)
   at org.olat.core.logging.activity.ThreadLocalUserActivityLoggerInstaller.runWithUserActivityLogger(ThreadLocalUserActivityLoggerInstaller.java:108)
   at org.olat.core.gui.control.DefaultController.dispatchEvent(DefaultController.java:243)
   at org.olat.core.gui.control.DefaultController.fireEvent(DefaultController.java:190)
   at org.olat.login.auth.OLATAuthentcationForm.formOK(OLATAuthentcationForm.java:93)
   at org.olat.core.gui.components.form.flexible.impl.FormBasicController.event(FormBasicController.java:380)