from SLA I am trying to use OOTB activity - SendEmailToAssigneeOnGoalTime. I always get the below error. from Clipboard, I dont see any issues and I see the workparty and all necessray details are correct.

should my workparty field - pyWorkPartyUri contain the email address of the party? I alredy have the email address on the pyEmail1 field.

I also see the pxCorrSummary populated with correct information...am trying for the last 4-5 hrs can some one help on this

ERROR - Unexpected exception caught while trying to send an email message.
javax.mail.internet.AddressException: Illegal address in string ``''
at javax.mail.internet.InternetAddress.<init>(InternetAddress.java:108)
at com.pegarules.generated.SendEmailMessage_060201_QskoEM4buNKlkzHYhyID5A.SendEmailMessage06_02_01(SendEmailMessage_060201_QskoEM4buNKlkzHYhyID5A.java:266)
at com.pegarules.generated.SendEmailMessage_060201_QskoEM4buNKlkzHYhyID5A.invoke(SendEmailMessage_060201_QskoEM4buNKlkzHYhyID5A.java:87)
at com.pega.pegarules.generation.internal.library.LibraryRuntime.resolveAndinvokeFunctionViaReflection(LibraryRuntime.java:131)
at com.pega.pegarules.generation.internal.library.LibraryRuntime.invokeLibraryRuntime(LibraryRuntime.java:108)
at com.pega.pegarules.session.internal.mgmt.Executable.invokeLibraryRuntime(Executable.java:7894)
at com.pega.pegarules.priv.generator.LibrarySupport.resolveAndInvokeFunctionViaReflection(LibrarySupport.java:181)
at com.pegarules.generated.pega_integrationengine_default.SendEmailMessage(pega_integrationengine_default.java:147)
at com.pegarules.generated.activity.ra_action_sendemailnotification_4c9b44224f54dd0bad94f867bdc2d9cb.step6_circum0(ra_action_sendemailnotification_4c9b44224f54dd0bad94f867bdc2d9cb.java:1067)
at com.pegarules.generated.activity.ra_action_sendemailnotification_4c9b44224f54dd0bad94f867bdc2d9cb.perform(ra_action_sendemailnotification_4c9b44224f54dd0bad94f867bdc2d9cb.java:170)
at com.pega.pegarules.session.internal.mgmt.Executable.doActivity(Executable.java:3018)
at com.pegarules.generated.activity.ra_action_send_fb9f72aa641c85528c87c5392664bf0d.step12_circum0(ra_action_send_fb9f72aa641c85528c87c5392664bf0d.java:1460)
at com.pegarules.generated.activity.ra_action_send_fb9f72aa641c85528c87c5392664bf0d.perform(ra_action_send_fb9f72aa641c85528c87c5392664bf0d.java:297)
at com.pega.pegarules.session.internal.mgmt.Executable.doActivity(Executable.java:3018)
at com.pega.pegarules.session.internal.async.agent.QueueProcessor.runActivity(QueueProcessor.java:696)
at com.pega.pegarules.session.internal.async.agent.QueueProcessor.execute(QueueProcessor.java:577)
at com.pega.pegarules.session.internal.async.BatchRequestorTask.run(BatchRequestorTask.java:784)
at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:1055)
at com.pega.pegarules.session.internal.PRSessionProviderImpl.doWithRequestorLocked(PRSessionProviderImpl.java:760)
at com.pega.pegarules.session.internal.async.BatchRequestorTask.run(BatchRequestorTask.java:550)
at com.pega.jsr166backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:991)
at com.pega.jsr166backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:532)
at java.lang.Thread.run(Thread.java:662)