Cryptic error message: Communication with the OSM server fa...

[imagines_freunde@…]

What steps will reproduce the problem?

The steps to reproduce are unclear. JOSM has been opened several hours (and a hibernation) ago, and was in the background since then, when the error message appeared.

What is the expected result?

The error message describes the problem.

What happens instead?

The long error message is shown in a narrow window's title and so its end is cut off.
The window's content only shows an X sign and 2 buttons, but not the error message, a description or any other text.

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

I'm reporting this error because the help page that was opened by clicking on the help button recommended that I do so.

I have attached a screenshot that shows how does this error message look like.

Revision:18789
Build-Date:2023-08-01 13:06:18

Identification: JOSM/1.5 (18789 en) Windows 10 64-Bit
OS Build number: Windows 10 Pro 1909 (18363)
Memory Usage: 456 MB / 8176 MB (165 MB allocated, but free)
Java version: 17.0.8+7-LTS, Azul Systems, Inc., OpenJDK 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1920×1080 (scaling 1.00×1.00) \Display1 1920×1080 (scaling 1.00×1.00)
Maximum Screen Size: 1920×1080
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: [-Djpackage.app-version=1.5.18789, --add-modules=java.scripting,java.sql,javafx.controls,javafx.media,javafx.swing,javafx.web, --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, --add-opens=java.base/java.lang=ALL-UNNAMED, --add-opens=java.base/java.nio=ALL-UNNAMED, --add-opens=java.base/jdk.internal.loader=ALL-UNNAMED, --add-opens=java.base/jdk.internal.ref=ALL-UNNAMED, --add-opens=java.desktop/javax.imageio.spi=ALL-UNNAMED, --add-opens=java.desktop/javax.swing.text.html=ALL-UNNAMED, --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED, -Djpackage.app-path=%UserProfile%\AppData\Local\JOSM\JOSM.exe]
Dataset consistency test: No problems found

Last errors/warnings:
- 00000.787 W: extended font config - overriding 'filename.Myanmar_Text=mmrtext.ttf' with 'MMRTEXT.TTF'
- 00000.790 W: extended font config - overriding 'filename.Mongolian_Baiti=monbaiti.ttf' with 'MONBAITI.TTF'
- 00001.861 E: java.awt.AWTError: Assistive Technology not found: com.sun.java.accessibility.AccessBridge. Cause: java.lang.ClassNotFoundException: com.sun.java.accessibility.AccessBridge
- 00002.065 E: java.security.KeyStoreException: Windows-ROOT not found. Cause: java.security.NoSuchAlgorithmException: Windows-ROOT KeyStore not available
- 96614.474 E: Communication with OSM server failed - null

[imagines_freunde@…]

screenshot of the error

[SekeRob]

Seen similar since the 18789 release to include something about a certificate. The frame pops up at times during long up sessions. Notably it's a normal centre screen pane with 2 buttons, nothing like "The long error message is shown in a narrow window's title"

[taylor.smock]

In 18802/josm:

Fix #23109, see #18982 (r16217): Use the error body from the exception if it is HTML