NPE in ChangesetReverter#init due to no edit layer

[anonymous]

What steps will reproduce the problem?

1. There is no edit layer in editor.
2. Open 127.0.0.1:8111/revert_changeset?id=<id>

What is the expected result?

I want reverted data to be loaded into a new layer

What happens instead?

Exception occurs

Please provide any additional information below. Attach a screenshot if possible.

If there is a layer in editor, reverted data will load into it.

JOSM version: tested 18463

=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (24) of main
java.lang.NullPointerException: Cannot read field "data" because "editLayer" is null
	at reverter.ChangesetReverter.<init>(ChangesetReverter.java:150)
	at reverter.RevertChangesetTask.revertChangeset(RevertChangesetTask.java:130)
	at reverter.RevertChangesetTask.realRun(RevertChangesetTask.java:93)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:94)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:142)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)

[skyper]

@anonymous:
May you, please, always supply the needed status report as operating system and plugin version are missing here.

---

Thanks for your report, however your ticket is incomplete and therefore not helpful in its current form.

Please add all needed information according to this list:

• The required parts of the Status Report from your JOSM.
  • Please, use Report Bug from Help menu and copy & paste.
• Describe what behaviour you expected.
• Describe what did happen instead.
• Describe if and how the issue is reproducible.
• Add any relevant information like error messages or screenshots.

To ensure that all technical relevant information is contained, create new tickets by clicking in JOSMs Main Menu on Help → Report Bug.

Remember: This is a generic notice so we don't need to write the same stuff again and again. It may only apply in parts to the specific case!

[taylor.smock]

In 35980/osm:

Fix #22144: NPE when no edit layer exists and remote control is called

[taylor.smock]

In 35981/osm:

See #22144 (dist): NPE when no edit layer exists and remote control is called