NPE at org.openstreetmap.josm.data.Bounds.extend

[anonymous]

What steps will reproduce the problem?

1. Open JOSM and enable the Plugin
2. load the Area i want to inspect
3. ==> the plugin shows noc Changeset to choose
4. I typed in the number of an existing changeset in this area
5. Tapped on the Button "Download Changeset"

What is the expected result?

==> I wanted to see the changeset on the screen

What happens instead?

==> JOSM shows Crash-R4eport

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

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2021-04-01 23:17:01 +0200 (Thu, 01 Apr 2021)
Revision:17702
Build-Date:2021-04-01 21:46:03
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (17702 de) Windows 10 64-Bit
OS Build number: Windows 10 Pro 2004 (19041)
Memory Usage: 447 MB / 1024 MB (90 MB allocated, but free)
Java version: 14+36-1461, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1920×1080 (scaling 1,00×1,00)
Maximum Screen Size: 1920×1080
Best cursor sizes: 16×16→32×32, 32×32→32×32
System property file.encoding: Cp1252
System property sun.jnu.encoding: Cp1252
Dataset consistency test: No problems found

Plugins:
+ changeset-viewer (25)
+ openqa (0.2.1)

Last errors/warnings:
- 01116,973 E: Invalid JSON: {}
- 01116,975 E: Invalid JSON: {}
- 01116,976 E: Invalid JSON: {}
- 01116,977 E: Invalid JSON: {}
- 01116,979 E: Invalid JSON: {}
- 01116,980 E: Invalid JSON: {}
- 01116,980 E: Invalid JSON: {}
- 01116,981 E: Invalid JSON: {}
- 01116,981 E: Invalid JSON: {}
- 01116,985 E: Handled by bug report queue: java.lang.NullPointerException



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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (21) of main
java.lang.NullPointerException
	at org.openstreetmap.josm.data.Bounds.extend(Bounds.java:384)
	at org.openstreetmap.josm.plugins.changeset.util.DataSetChangesetBuilder.mergeBounds(DataSetChangesetBuilder.java:178)
	at org.openstreetmap.josm.plugins.changeset.util.DataSetChangesetBuilder.mergeBounds(DataSetChangesetBuilder.java:169)
	at org.openstreetmap.josm.plugins.changeset.util.DataSetChangesetBuilder.buildRelation(DataSetChangesetBuilder.java:224)
	at org.openstreetmap.josm.plugins.changeset.util.DataSetChangesetBuilder.build(DataSetChangesetBuilder.java:94)
	at org.openstreetmap.josm.plugins.changeset.util.ChangesetController.getChangeset(ChangesetController.java:30)
	at org.openstreetmap.josm.plugins.changeset.ChangesetDialog.printMap(ChangesetDialog.java:156)
	at org.openstreetmap.josm.plugins.changeset.ChangesetDialog$1.actionPerformed(ChangesetDialog.java:111)
	at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967)
	at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2308)
	at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405)
	at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
	at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:279)
	at java.desktop/java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:297)
	at java.desktop/java.awt.Component.processMouseEvent(Component.java:6636)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3342)
	at java.desktop/java.awt.Component.processEvent(Component.java:6401)
	at java.desktop/java.awt.Container.processEvent(Container.java:2263)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:5012)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2321)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4844)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4919)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4548)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4489)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2307)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2764)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4844)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:745)
	at java.desktop/java.awt.EventQueue$5.run(EventQueue.java:743)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:391)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:742)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)

[taylor.smock]

Closed as duplicate of #22209.