InaccessibleObjectException: Unable to make field private … accessible (Help browser opens with error instead of help.)

[anonymous]

What steps will reproduce the problem?

1. start JOSM 18303
2. open menu: help/help

What is the expected result?

Help browser should open with start page.

What happens instead?

An error message pops up, see screenshot attached.

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

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2021-11-01 23:05:46 +0100 (Mon, 01 Nov 2021)
Revision:18303
Build-Date:2021-11-01 22:25:18
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (18303 en) Linux Manjaro Linux
Memory Usage: 648 MB / 8008 MB (216 MB allocated, but free)
Java version: 17.0.1+12, N/A, OpenJDK 64-Bit Server VM
Look and Feel: javax.swing.plaf.metal.MetalLookAndFeel
Screen: :0.0 3840×2160 (scaling 1.00×1.00) :0.1 3840×2160 (scaling 1.00×1.00)
Maximum Screen Size: 3840×2160
Best cursor sizes: 16×16→16×16, 32×32→32×32
Environment variable LANG: en_US.utf8
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: GNOME
VM arguments: [-Djosm.restart=true]
Dataset consistency test: No problems found

Map paint styles:
+ https://josm.openstreetmap.de/josmfile?page=Styles/HiDPISupport&zip=1
+ https://github.com/bastik/mapcss-tools/raw/osm/mapnik2mapcss/osm-results/mapnik.zip
+ https://raw.githubusercontent.com/yopaseopor/traffic_signs_style_JOSM/master/Styles_Traffic_signs_EUR_OC.zip

Last errors/warnings:
- 00470.220 E: Handled by bug report queue: java.lang.reflect.InaccessibleObjectException: Unable to make field private java.awt.Image javax.swing.text.html.ImageView.image accessible: module java.desktop does not "opens javax.swing.text.html" to unnamed module @3bb4d93f



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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (30) of main
java.lang.reflect.InaccessibleObjectException: Unable to make field private java.awt.Image javax.swing.text.html.ImageView.image accessible: module java.desktop does not "opens javax.swing.text.html" to unnamed module @3bb4d93f
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:354)
	at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:297)
	at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:178)
	at java.base/java.lang.reflect.Field.setAccessible(Field.java:172)
	at org.openstreetmap.josm.tools.ReflectionUtils.lambda$setObjectsAccessible$0(ReflectionUtils.java:32)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:318)
	at org.openstreetmap.josm.tools.ReflectionUtils.setObjectsAccessible(ReflectionUtils.java:29)
	at org.openstreetmap.josm.gui.widgets.JosmImageView.<init>(JosmImageView.java:50)
	at org.openstreetmap.josm.gui.widgets.JosmHTMLFactory.create(JosmHTMLFactory.java:29)
	at java.desktop/javax.swing.text.html.TableView.create(TableView.java:942)
	at java.desktop/javax.swing.text.CompositeView.loadChildren(CompositeView.java:112)
	at java.desktop/javax.swing.text.FlowView$LogicalView.loadChildren(FlowView.java:722)
	at java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:139)
	at java.desktop/javax.swing.text.FlowView.loadChildren(FlowView.java:147)
	at java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:139)
	at java.desktop/javax.swing.text.FlowView.setParent(FlowView.java:297)
	at java.desktop/javax.swing.text.html.ParagraphView.setParent(ParagraphView.java:75)
	at java.desktop/javax.swing.text.CompositeView.replace(CompositeView.java:219)
	at java.desktop/javax.swing.text.BoxView.replace(BoxView.java:182)
	at java.desktop/javax.swing.text.CompositeView.loadChildren(CompositeView.java:114)
	at java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:139)
	at java.desktop/javax.swing.text.html.BlockView.setParent(BlockView.java:72)
	at java.desktop/javax.swing.text.CompositeView.replace(CompositeView.java:219)
	at java.desktop/javax.swing.text.BoxView.replace(BoxView.java:182)
	at java.desktop/javax.swing.text.html.TableView$RowView.replace(TableView.java:1474)
	at java.desktop/javax.swing.text.CompositeView.loadChildren(CompositeView.java:114)
	at java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:139)
	at java.desktop/javax.swing.text.CompositeView.replace(CompositeView.java:219)
	at java.desktop/javax.swing.text.BoxView.replace(BoxView.java:182)
	at java.desktop/javax.swing.text.html.TableView.replace(TableView.java:913)
	at java.desktop/javax.swing.text.CompositeView.loadChildren(CompositeView.java:114)
	at java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:139)
	at java.desktop/javax.swing.text.html.TableView.setParent(TableView.java:817)
	at java.desktop/javax.swing.text.CompositeView.replace(CompositeView.java:219)
	at java.desktop/javax.swing.text.BoxView.replace(BoxView.java:182)
	at java.desktop/javax.swing.text.CompositeView.loadChildren(CompositeView.java:114)
	at java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:139)
	at java.desktop/javax.swing.text.html.BlockView.setParent(BlockView.java:72)
	at java.desktop/javax.swing.text.CompositeView.replace(CompositeView.java:219)
	at java.desktop/javax.swing.text.BoxView.replace(BoxView.java:182)
	at java.desktop/javax.swing.text.CompositeView.loadChildren(CompositeView.java:114)
	at java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:139)
	at java.desktop/javax.swing.text.html.BlockView.setParent(BlockView.java:72)
	at java.desktop/javax.swing.text.CompositeView.replace(CompositeView.java:219)
	at java.desktop/javax.swing.text.BoxView.replace(BoxView.java:182)
	at java.desktop/javax.swing.text.CompositeView.loadChildren(CompositeView.java:114)
	at java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:139)
	at java.desktop/javax.swing.text.html.BlockView.setParent(BlockView.java:72)
	at java.desktop/javax.swing.text.html.HTMLEditorKit$HTMLFactory$BodyBlockView.setParent(HTMLEditorKit.java:1471)
	at java.desktop/javax.swing.text.CompositeView.replace(CompositeView.java:219)
	at java.desktop/javax.swing.text.BoxView.replace(BoxView.java:182)
	at java.desktop/javax.swing.text.CompositeView.loadChildren(CompositeView.java:114)
	at java.desktop/javax.swing.text.CompositeView.setParent(CompositeView.java:139)
	at java.desktop/javax.swing.text.html.BlockView.setParent(BlockView.java:72)
	at java.desktop/javax.swing.plaf.basic.BasicTextUI$RootView.setView(BasicTextUI.java:1432)
	at java.desktop/javax.swing.plaf.basic.BasicTextUI.setView(BasicTextUI.java:713)
	at java.desktop/javax.swing.plaf.basic.BasicTextUI.modelChanged(BasicTextUI.java:702)
	at java.desktop/javax.swing.plaf.basic.BasicTextUI$UpdateHandler.propertyChange(BasicTextUI.java:1898)
	at java.desktop/java.beans.PropertyChangeSupport.fire(PropertyChangeSupport.java:343)
	at java.desktop/java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:335)
	at java.desktop/java.beans.PropertyChangeSupport.firePropertyChange(PropertyChangeSupport.java:268)
	at java.desktop/java.awt.Component.firePropertyChange(Component.java:8722)
	at java.desktop/javax.swing.text.JTextComponent.setDocument(JTextComponent.java:456)
	at org.openstreetmap.josm.gui.help.HelpBrowser.loadTopic(HelpBrowser.java:236)
	at org.openstreetmap.josm.gui.help.HelpBrowser.loadRelativeHelpTopic(HelpBrowser.java:332)
	at org.openstreetmap.josm.gui.help.HelpBrowser.openHelpTopic(HelpBrowser.java:411)
	at org.openstreetmap.josm.gui.help.HelpBrowser.lambda$setUrlForHelpTopic$1(HelpBrowser.java:116)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:318)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:771)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:722)
	at java.desktop/java.awt.EventQueue$4.run(EventQueue.java:716)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:741)
	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)

[skyper]

How do you download josm and how do you start it?

Probably a duplicate of #21649 and #21503. See #21503 for instructions how to load the "unamed modules".

[Don-vip]

please report this issue to the people building JOSM for "Linux Manjaro". The JVM options required to run JOSM properly on recent versions of Java are missing. They must add them as we do in Debian/Ubuntu launch script.

[skyper]

Ticket #21687 has been marked as a duplicate of this ticket.