Once a change to the user object is made in client 0, the user object cannot be saved again. This works in the non 0 client.
2020-05-07 14:43:13,388 http-nio-8080-exec-5 [ERROR] AUTOMIC:0/USER/USER 998 0000000208084989 [com.uc4.webui.common.errorhandling.Safe] - Unable to invoke method click in com.vaadin.shared.ui.button.ButtonServerRpc
com.vaadin.server.ServerRpcManager$RpcInvocationException: Unable to invoke method click in com.vaadin.shared.ui.button.ButtonServerRpc
Caused by: java.lang.reflect.InvocationTargetException: null
Caused by: com.vaadin.event.ListenerMethod$MethodException: Invocation of method buttonClick in com.uc4.ecc.ae.commons.content.uc4objectview.UC4ObjectView$2 failed.
Caused by: java.lang.NumberFormatException: For input string: ""
Release : 12.3
Component : AUTOMIC WEB INTERFACE
Defect.
Update the AWI to 12.3.3 or higher - please note an update to the AWI also requires that the utilities, initialdata, and automation engine components be on 12.3.3 as well.