Upload of data triggering expection "Primitive cannot be modified in read-only dataset"

[steve.arnold@…]

What steps will reproduce the problem?

1. Upload changeset

What is the expected result?

Changeset uploaded, no errors

What happens instead?

An unexpected exception occurred.
This is always a coding error. If you are running the latest version of JOSM, please consider being kind and file a bug report.

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

Your current version of JOSM is 18531
JOSM is up to date.

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2022-08-01 20:38:58 +0200 (Mon, 01 Aug 2022)
Revision:18531
Build-Date:2022-08-02 01:30:56
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (18531 en) Windows 10 64-Bit
OS Build number: Windows 10 Pro 2009 (19043)
Memory Usage: 324 MB / 2006 MB (133 MB allocated, but free)
Java version: 11.0.15+10-LTS, Azul Systems, Inc., OpenJDK 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1280×1024 (scaling 1.00×1.00) \Display1 3840×2160 (scaling 1.00×1.00) \Display2 1280×1024 (scaling 1.00×1.00)
Maximum Screen Size: 3840×2160
Best cursor sizes: 16×16→32×32, 32×32→32×32
System property file.encoding: Cp1252
System property sun.jnu.encoding: Cp1252
Locale info: en_US
Numbers with default locale: 1234567890 -> 1234567890
VM arguments: [-Dicedtea-web.bin.location=C:\Program Files\OpenWebStart\javaws, -Djava.util.Arrays.useLegacyMergeSort=true, --add-exports=jdk.deploy/com.sun.deploy.config=ALL-UNNAMED, --add-opens=java.desktop/javax.swing.text.html=ALL-UNNAMED, --add-reads=java.naming=ALL-UNNAMED,java.desktop, --add-exports=java.base/sun.security.action=ALL-UNNAMED,java.desktop, --add-reads=java.base=ALL-UNNAMED,java.desktop, --add-exports=java.naming/com.sun.jndi.toolkit.url=ALL-UNNAMED,java.desktop, --add-opens=java.base/jdk.internal.loader=ALL-UNNAMED, --add-exports=java.desktop/com.apple.eawt=ALL-UNNAMED, --add-exports=java.desktop/sun.awt=ALL-UNNAMED,java.desktop, --add-opens=java.base/jdk.internal.ref=ALL-UNNAMED, --add-exports=java.base/sun.security.validator=ALL-UNNAMED,java.desktop, --add-exports=java.desktop/com.sun.imageio.plugins.jpeg=ALL-UNNAMED, --add-exports=java.base/sun.net.www.protocol.jar=ALL-UNNAMED,java.desktop, --add-exports=java.base/jdk.internal.util.jar=ALL-UNNAMED,java.desktop, --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED, --add-exports=java.base/com.sun.net.ssl.internal.ssl=ALL-UNNAMED,java.desktop, --add-exports=javafx.graphics/com.sun.javafx.application=ALL-UNNAMED, --add-modules=java.scripting,java.sql,javafx.controls,javafx.media,javafx.swing,javafx.web, --add-exports=java.desktop/sun.awt.X11=ALL-UNNAMED,java.desktop, --add-exports=java.desktop/sun.applet=ALL-UNNAMED,java.desktop,jdk.jsobject, --add-exports=java.base/sun.net.www.protocol.http=ALL-UNNAMED,java.desktop, --add-opens=java.base/java.lang=ALL-UNNAMED, --add-exports=java.base/sun.security.util=ALL-UNNAMED,java.desktop, --add-exports=java.desktop/com.sun.imageio.spi=ALL-UNNAMED, --add-reads=java.desktop=ALL-UNNAMED,java.naming, --add-opens=java.base/java.nio=ALL-UNNAMED, --add-exports=java.base/sun.security.x509=ALL-UNNAMED,java.desktop, --add-opens=java.desktop/javax.imageio.spi=ALL-UNNAMED, --add-exports=java.desktop/javax.jnlp=ALL-UNNAMED,java.desktop, --add-exports=java.base/sun.security.provider=ALL-UNNAMED,java.desktop]

Plugins:
+ apache-commons (36003)
+ ejml (35924)
+ geotools (36008)
+ imagery_offset_db (35978)
+ jackson (36006)
+ jaxb (35952)
+ jts (36004)
+ opendata (36011)
+ turnrestrictions (36011)
+ utilsplugin2 (36011)

Last errors/warnings:
- 00000.955 W: extended font config - overriding 'filename.Myanmar_Text=mmrtext.ttf' with 'MMRTEXT.TTF'
- 00000.959 W: extended font config - overriding 'filename.Mongolian_Baiti=monbaiti.ttf' with 'MONBAITI.TTF'
- 02519.433 E: Handled by bug report queue: org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Primitive cannot be modified in read-only dataset: {Way id=885767696 version=3 VT nodes=[{Node id=245550578 version=7 V lat=43.0225381,lon=-89.4488869}, {Node id=5435757164 version=2 V lat=43.0225344,lon=-89.4490589}, {Node id=6484041861 version=3 V lat=43.0225539,lon=-89.4492123}]}



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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-1 (48) of JOSM
org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Primitive cannot be modified in read-only dataset: {Way id=885767696 version=3 VT nodes=[{Node id=245550578 version=7 V lat=43.0225381,lon=-89.4488869}, {Node id=5435757164 version=2 V lat=43.0225344,lon=-89.4490589}, {Node id=6484041861 version=3 V lat=43.0225539,lon=-89.4492123}]}
	at org.openstreetmap.josm.data.osm.OsmPrimitive.checkDatasetNotReadOnly(OsmPrimitive.java:206)
	at org.openstreetmap.josm.data.osm.OsmPrimitive.removeReferrer(OsmPrimitive.java:671)
	at org.openstreetmap.josm.data.osm.Relation.setMembers(Relation.java:47)
	at org.openstreetmap.josm.gui.dialogs.relation.MemberTableModel.applyToRelation(MemberTableModel.java:393)
	at org.openstreetmap.josm.gui.dialogs.relation.actions.IRelationEditorActionAccess.getChangedRelation(IRelationEditorActionAccess.java:88)
	at org.openstreetmap.josm.gui.dialogs.relation.actions.ApplyAction.updateEnabledState(ApplyAction.java:38)
	at org.openstreetmap.josm.gui.dialogs.relation.actions.AbstractRelationEditorAction.tableChanged(AbstractRelationEditorAction.java:76)
	at java.desktop/javax.swing.table.AbstractTableModel.fireTableChanged(AbstractTableModel.java:297)
	at java.desktop/javax.swing.table.AbstractTableModel.fireTableDataChanged(AbstractTableModel.java:199)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740)
	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.pumpEventsForFilter(EventDispatchThread.java:117)
	at java.desktop/java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:190)
	at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:235)
	at java.desktop/java.awt.WaitDispatchSupport$4.run(WaitDispatchSupport.java:233)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.desktop/java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:233)
	at java.desktop/java.awt.Dialog.show(Dialog.java:1070)
	at java.desktop/java.awt.Component.show(Component.java:1716)
	at java.desktop/java.awt.Component.setVisible(Component.java:1663)
	at java.desktop/java.awt.Window.setVisible(Window.java:1031)
	at java.desktop/java.awt.Dialog.setVisible(Dialog.java:1005)
	at org.openstreetmap.josm.gui.progress.swing.PleaseWaitProgressMonitor.lambda$doBeginTask$3(PleaseWaitProgressMonitor.java:255)
	at org.openstreetmap.josm.gui.progress.swing.PleaseWaitProgressMonitor.lambda$doInEDT$0(PleaseWaitProgressMonitor.java:113)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:313)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:721)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:715)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:740)
	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 #22268.