12.3 Blank error message on details if folder selected in left-hand pane

Products

• CA Automic Workload Automation - Automation Engine
• CA Automic One Automation

Issue/Introduction

In 12.3, choosing a folder in the left hand pane of the Process Assembly perspective gives a blank error message.

1.) Open the AWI (any client)
2.) Select a folder in the left pane
3.) Hit details

There is an error in the AWI log that says:

2023-02-06 18:56:22,739 s-jsse-nio-8443-exec-8 [ERROR] AUT1239:100/AUTOMIC/AUTOMIC 0 0000000001071005  [com.uc4.webui.common.errorhandling.Safe] -  Unable to invoke method click in com.vaadin.shared.ui.button.ButtonServerRpc
com.vaadin.server.ServerRpcManager$RpcInvocationException: Unable to invoke method click in com.vaadin.shared.ui.button.ButtonServerRpc
...
Caused by: com.vaadin.event.ListenerMethod$MethodException: Invocation of method buttonClick in com.uc4.ecc.plugins.ae.perspectives.processassembly.navigation.home.FolderToolbar$$Lambda$886/0x0000000101eeb440 failed.
    at com.vaadin.event.ListenerMethod.receiveEvent(ListenerMethod.java:533)
    at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:200)
    at com.vaadin.event.EventRouter.fireEvent(EventRouter.java:163)
    at com.vaadin.server.AbstractClientConnector.fireEvent(AbstractClientConnector.java:1015)
    at com.vaadin.ui.Button.fireClick(Button.java:377)
    at com.vaadin.ui.Button$1.click(Button.java:54)
    ... 43 common frames omitted
Caused by: java.lang.NullPointerException: null

Environment

Release : 12.3.9

Resolution

This error happens in 12.3, but no longer happens in 21.0. 

Upgrade to 21.0.

In 21.0, there is no error; the details pane says "No item selected" instead. 

When you choose a folder in the main area for Process Assembly, it has Details for it.