IAE: Invalid number of points in LinearRing (found 3 - must be 0 or >= 4)

[anonymous]

What steps will reproduce the problem?

1. Ouverture JOSM à partir du site ​https://cadastre.damsy.net/#12/47.2445/3.3759
2. application du script segmented.js.txt et modifications
3. application du script conflation.js.txt

What is the expected result?

réaliser des conflations

What happens instead?

erreur mise à jour du greffon jts (obsolete)

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: 2019-07-09 01:01:06 +0200 (Tue, 09 Jul 2019)
Build-Date:2019-07-08 23:02:00
Revision:15237
Relative:URL: ^/trunk

Identification: JOSM/1.5 (15237 fr) Windows 10 64-Bit
OS Build number: Windows 10 Home 1809 (17763)
Memory Usage: 685 MB / 989 MB (245 MB allocated, but free)
Java version: 1.8.0_211-b12, Oracle Corporation, Java HotSpot(TM) Client VM
Screen: \Display0 1920x1080
Maximum Screen Size: 1920x1080
Dataset consistency test: No problems found

Plugins:
+ Mapillary (1.5.18)
+ OpenStreetCam (245)
+ RoadSigns (UNKNOWN)
+ apache-commons (34908)
+ apache-http (34908)
+ cadastre-fr (34977)
+ conflation (0.6.3)
+ ejml (35049)
+ geojson (124)
+ geotools (34908)
+ imagery_offset_db (34908)
+ jna (34908)
+ jts (34908)
+ scripting (30795)
+ todo (30306)
+ turnrestrictions (34977)
+ utilsplugin2 (34977)

Last errors/warnings:
- W: No configuration settings found.  Using hardcoded default values for all pools.
- E: Handled by bug report queue: java.lang.IllegalArgumentException: Invalid number of points in LinearRing (found 3 - must be 0 or >= 4)


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (15) of main
java.lang.IllegalArgumentException: Invalid number of points in LinearRing (found 3 - must be 0 or >= 4)
	at com.vividsolutions.jts.geom.LinearRing.validateConstruction(LinearRing.java:114)
	at com.vividsolutions.jts.geom.LinearRing.<init>(LinearRing.java:106)
	at org.openstreetmap.josm.plugins.jts.JTSConverter.convertWay(JTSConverter.java:94)
	at org.openstreetmap.josm.plugins.jts.JTSConverter.convert(JTSConverter.java:105)
	at org.openstreetmap.josm.plugins.conflation.OsmFeature.<init>(OsmFeature.java:37)
	at org.openstreetmap.josm.plugins.conflation.MatchesComputation.createFeatureCollection(MatchesComputation.java:119)
	at org.openstreetmap.josm.plugins.conflation.MatchesComputation.generateMatches(MatchesComputation.java:48)
	at org.openstreetmap.josm.plugins.conflation.ConflationToggleDialog$2.realRun(ConflationToggleDialog.java:1147)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:94)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:142)
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.util.concurrent.FutureTask.run(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.lang.Thread.run(Unknown Source)

[Don-vip]

Closed as duplicate of #14650.