DataIntegrityProblemException: identified sequence of equal nodes in a node list

[nirutaneupane055@…]

What steps will reproduce the problem?

What is the expected result?

What happens instead?

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: 2021-03-17 18:58:40 +0100 (Wed, 17 Mar 2021)
Build-Date:2021-03-17 17:59:56
Revision:17580
Relative:URL: ^/trunk

Identification: JOSM/1.5 (17580 en) Windows 10 64-Bit
OS Build number: Windows 10 Pro 1909 (18363)
Memory Usage: 762 MB / 1820 MB (531 MB allocated, but free)
Java version: 1.8.0_281-b09, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Look and Feel: javax.swing.plaf.nimbus.NimbusLookAndFeel
Screen: \Display0 1366×768 (scaling 1.00×1.00)
Maximum Screen Size: 1366×768
Best cursor sizes: 16×16→32×32, 32×32→32×32
Dataset consistency test: No problems found

Plugins:
+ FastDraw (35640)
+ buildings_tools (35669)
+ contourmerge (v0.1.6)
+ imagery_offset_db (35640)
+ terracer (35640)
+ turnrestrictions (35640)
+ utilsplugin2 (35691)

Last errors/warnings:
- 00018.382 W: Unable to request certificate of https://roottest-g3.pkioverheid.nl
- 68613.865 W: java.net.UnknownHostException: api.openstreetmap.org
- 68613.989 E: java.net.UnknownHostException: api.openstreetmap.org
- 68614.031 W: org.openstreetmap.josm.io.OsmTransferException: Could not connect to the OSM server. Please check your internet connection.. Cause: java.net.UnknownHostException: api.openstreetmap.org
- 68913.648 W: java.net.UnknownHostException: api.openstreetmap.org
- 68913.741 W: Already here java.net.UnknownHostException: api.openstreetmap.org
- 68913.741 E: java.net.UnknownHostException: api.openstreetmap.org
- 68913.773 W: org.openstreetmap.josm.io.OsmTransferException: Could not connect to the OSM server. Please check your internet connection.. Cause: java.net.UnknownHostException: api.openstreetmap.org
- 78390.282 E: Handled by bug report queue: org.openstreetmap.josm.data.osm.DataIntegrityProblemException: identified sequence of equal nodes in a node list, illegal sequence starts a position 9
- 78541.445 E: Handled by bug report queue: org.openstreetmap.josm.data.osm.DataIntegrityProblemException: identified sequence of equal nodes in a node list, illegal sequence starts a position 9



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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (20) of main
org.openstreetmap.josm.data.osm.DataIntegrityProblemException: identified sequence of equal nodes in a node list, illegal sequence starts a position 9
	at org.openstreetmap.josm.plugins.contourmerge.WaySlice.ensureInvariantsForClosedWay(WaySlice.java:306)
	at org.openstreetmap.josm.plugins.contourmerge.WaySlice.replaceNodesInClosedWay(WaySlice.java:372)
	at org.openstreetmap.josm.plugins.contourmerge.WaySlice.replaceNodes(WaySlice.java:396)
	at org.openstreetmap.josm.plugins.contourmerge.ContourMergeModel.lambda$buildSourceChangeCommands$3(ContourMergeModel.java:440)
	at java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)
	at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(Unknown Source)
	at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
	at java.util.stream.StreamSpliterators$WrappingSpliterator.forEachRemaining(Unknown Source)
	at java.util.stream.Streams$ConcatSpliterator.forEachRemaining(Unknown Source)
	at java.util.stream.AbstractPipeline.copyInto(Unknown Source)
	at java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
	at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)
	at java.util.stream.AbstractPipeline.evaluate(Unknown Source)
	at java.util.stream.ReferencePipeline.collect(Unknown Source)
	at org.openstreetmap.josm.plugins.contourmerge.ContourMergeModel.buildContourAlignCommand(ContourMergeModel.java:506)
	at org.openstreetmap.josm.plugins.contourmerge.ContourMergeModel.buildContourAlignCommand(ContourMergeModel.java:491)
	at org.openstreetmap.josm.plugins.contourmerge.ContourMergeMode.lambda$onDrop$9(ContourMergeMode.java:284)
	at java.util.Optional.ifPresent(Unknown Source)
	at org.openstreetmap.josm.plugins.contourmerge.ContourMergeMode.onDrop(ContourMergeMode.java:277)
	at org.openstreetmap.josm.plugins.contourmerge.ContourMergeMode.mouseReleased(ContourMergeMode.java:114)
	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)

[skyper]

Closed as duplicate of #19499.