Changeset Viewer Plugin not working

[alexbrassington967@…]

What steps will reproduce the problem?

1. Paste changeset number into the plugin
2. Click Display Changeset
3. Error

What is the expected result?

Displays changeset

What happens instead?

Error occurs

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

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2020-11-21 14:56:29 +0100 (Sat, 21 Nov 2020)
Build-Date:2020-11-22 02:30:52
Revision:17329
Relative:URL: ^/trunk

Identification: JOSM/1.5 (17329 en_GB) Windows 10 64-Bit
OS Build number: Windows 10 Home 2009 (19042)
Memory Usage: 672 MB / 989 MB (226 MB allocated, but free)
Java version: 1.8.0_271-b09, Oracle Corporation, Java HotSpot(TM) Client VM
Look and Feel: com.formdev.flatlaf.FlatDarkLaf
Screen: \Display0 1920x1080 (scaling 1.0x1.0)
Maximum Screen Size: 1920x1080
Best cursor sizes: 16x16 -> 32x32, 32x32 -> 32x32
Dataset consistency test: No problems found

Plugins:
+ Create_grid_of_ways (35640)
+ CustomizePublicTransportStop (35640)
+ FastDraw (35640)
+ FixAddresses (35640)
+ ImproveOsm (203)
+ ImproveWay (29)
+ Mapillary (1.5.28-1-g937e98c)
+ MicrosoftStreetside (35248)
+ OpenStreetCam (356)
+ PolygonCutOut (v0.7)
+ RelationDissolve (0.2.0)
+ alignways (35640)
+ apache-commons (35524)
+ apache-http (35589)
+ areaselector (368)
+ austriaaddresshelper (1597341117)
+ auto_tools (73)
+ buildings_tools (35669)
+ changeset-viewer (25)
+ continuosDownload (91)
+ contourmerge (v0.1.6)
+ dataimport (35640)
+ easypresets (1605041256)
+ ejml (35458)
+ flatlaf (35652)
+ geotools (35458)
+ highwayNameModification (0.0.9)
+ imagery_offset_db (35640)
+ indoorhelper (eca65b2)
+ javafx-windows (35655)
+ jaxb (35543)
+ jna (35662)
+ josm-batch-downloader (1.0.2)
+ jts (35458)
+ log4j (35458)
+ mapwithai (1.7.1.1)
+ merge-overlap (35640)
+ notesolver (0.3.2)
+ opendata (35640)
+ openqa (0.2.0)
+ osmai (1.0)
+ pt_assistant (2.1.10-80-g7d9bba3)
+ public_transport (35640)
+ reltoolbox (35640)
+ reverter (35640)
+ tageditor (35640)
+ terracer (35640)
+ turnlanes-tagging (288)
+ turnrestrictions (35640)
+ undelete (35640)
+ utilsplugin2 (35671)
+ waydownloader (35640)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/Bus_lanes&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/LaneAttributes&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/ParkingLanes&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Post_box_UK&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Playground_Equipment&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/TurnLanes&zip=1

Map paint styles:
- https://josm.openstreetmap.de/josmfile?page=Styles/PublicTransport&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/MapWithAI&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Streets&zip=1
- https://raw.githubusercontent.com/species/josm-preset-traffic_sign_direction/master/direction.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/FixmeAndNote&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Incline&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Lit&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Maxspeed&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Modified&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/ParkingLanes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/PTStops&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Sidewalks&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Noname&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Surface&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Surface-DataEntry&zip=1
- <josm.pref>\styles\sit.mapcss

Last errors/warnings:
- 00056.715 E: Invalid JSON: {"type":"node","ref":"7533607243","role":"platform","nodes":[]}
- 00056.716 E: Invalid JSON: {"type":"node","ref":"7533607257","role":"platform","nodes":[]}
- 00056.716 E: Invalid JSON: {"type":"node","ref":"1143273124","role":"platform","nodes":[]}
- 00056.718 E: Invalid JSON: {}
- 00056.718 E: Invalid JSON: {}
- 00056.719 E: Invalid JSON: {}
- 00056.719 E: Invalid JSON: {}
- 00056.720 E: Invalid JSON: {}
- 00056.720 E: Invalid JSON: {}
- 00056.725 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 (15) 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$1.actionPerformed(ChangesetDialog.java:111)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$500(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)

[taylor.smock]

Closed as duplicate of #22209.