KartaView plugin bug

[koen8]

What steps will reproduce the problem?

1. Click a KartaView image on the KartaView layer

What is the expected result?

• The image displays in the KartaView window
• The KartaView window has buttons available to step to the next or previous image in the current track

What happens instead?

• A NullPointerException is displayed
• The correct image is displayed in the KartaView window
• The buttons to jump to the next and previous image of the current track are disabled

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

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2025-03-29 21:08:34 +0100 (Sat, 29 Mar 2025)
Revision:19369
Build-Date:2025-03-30 01:30:37
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (19369 en) Linux Freedesktop SDK 24.08 (Flatpak runtime)
Memory Usage: 1364 MB / 8192 MB (429 MB allocated, but free)
Java version: 21.0.6+2, Flathub, OpenJDK 64-Bit Server VM
Look and Feel: javax.swing.plaf.metal.MetalLookAndFeel
Screen: :0.0 2560x1440x[Multi depth]@60Hz (scaling 1.00×1.00) :0.1 1920x1080x[Multi depth]@[Unknown refresh rate] (scaling 1.00×1.00)
Maximum Screen Size: 2560×1440
Best cursor sizes: 16×16→16×16, 32×32→32×32
Environment variable LANG: en_US.UTF-8
System property file.encoding: UTF-8
System property sun.jnu.encoding: UTF-8
Locale info: en_US
Numbers with default locale: 1234567890 -> 1234567890
Desktop environment: XFCE
VM arguments: [--module-path=/app/share/openjfx/lib, --add-modules=java.scripting,java.sql,javafx.controls,javafx.media,javafx.swing,javafx.web, -Djosm.restart=true, -Djava.net.useSystemProxies=true, --add-exports=java.base/sun.security.action=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.plugins.jpeg=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.spi=ALL-UNNAMED]
Dataset consistency test: No problems found

Plugins:
+ KartaView (545)
+ Mapillary (1792)
+ apache-commons (36415)
+ buildings_tools (36413)
+ tageditor (36413)
+ terracer (36413)
+ turnlanes-tagging (1743059536)
+ utilsplugin2 (36413)

Last errors/warnings:
- 00066.596 E: Handled by bug report queue: java.lang.NullPointerException: Cannot invoke "java.util.Collection.size()" because "c" is null
- 00231.623 E: Handled by bug report queue: java.lang.NullPointerException: Cannot invoke "java.util.Collection.size()" because "c" is null
- 00318.859 E: Handled by bug report queue: java.lang.NullPointerException: Cannot invoke "java.util.Collection.size()" because "c" is null



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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: pool-1-thread-5 (176)
java.lang.NullPointerException: Cannot invoke "java.util.Collection.size()" because "c" is null
	at java.base/java.util.HashSet.<init>(HashSet.java:120)
	at org.openstreetmap.josm.plugins.kartaview.entity.Sequence.<init>(Sequence.java:29)
	at org.openstreetmap.josm.plugins.kartaview.handler.ServiceHandler.retrieveSequence(ServiceHandler.java:113)
	at org.openstreetmap.josm.plugins.kartaview.handler.imagery.KartaViewLayerSelectionHandler.lambda$loadSequence$7(KartaViewLayerSelectionHandler.java:446)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1144)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:642)
	at java.base/java.lang.Thread.run(Thread.java:1583)