Loading data in JOSM resulted in unexpected exception

[anonymous]

What steps will reproduce the problem?

Not sure. I tried loading data and the connection was a bit slow. Disconnecting from the network completely won't produce the same error.

What is the expected result?

It should've loaded the data or at least failed gracefully.

What happens instead?

Resulted in an unexpected exception.

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

Revision:19423
Build-Date:2025-07-14 11:28:00

Identification: JOSM/1.5 (19423 en) Mac OS X 15.5
OS Build number: macOS 15.5 (24F74)
Memory Usage: 976 MB / 12288 MB (367 MB allocated, but free)
Java version: 21.0.7+6-LTS, Azul Systems, Inc., OpenJDK 64-Bit Server VM
Look and Feel: com.apple.laf.AquaLookAndFeel
Screen: Display 1 1920x1080x32bpp@75Hz (scaling 1.00×1.00)
Maximum Screen Size: 1920×1080
Best cursor sizes: 16×16→16×16, 32×32→32×32
System property file.encoding: UTF-8
System property sun.jnu.encoding: UTF-8
Locale info: en_US
Numbers with default locale: 1234567890 -> 1234567890
VM arguments: [-Djpackage.app-version=19423, -XX:MaxRAMPercentage=75.0, --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.apple.eawt=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=/Applications/JOSM.app/Contents/MacOS/JOSM]
Dataset consistency test: No problems found

Plugins:
+ CADTools (23)
+ FastDraw (36438)
+ ShapeTools (e2b1469)
+ buildings_tools (36438)
+ imagery_offset_db (36438)
+ markseen (176)
+ measurement (36438)
+ sidewalks (71)
+ terracer (36438)
+ utilsplugin2 (36438)

Tagging presets:
+ https://raw.githubusercontent.com/osmlab/name-suggestion-index/main/dist/presets/nsi-josm-presets.min.xml

Last errors/warnings:
- 00044.326 W: java.io.IOException: Attribution is not loaded yet
- 00044.326 W: java.io.IOException: Attribution is not loaded yet
- 00044.327 W: java.io.IOException: Attribution is not loaded yet
- 00044.327 W: java.io.IOException: Attribution is not loaded yet
- 00044.328 W: java.io.IOException: Attribution is not loaded yet
- 03399.532 W: java.net.SocketTimeoutException: Read timed out
- 03412.351 W: java.net.SocketTimeoutException: Read timed out. Cause: java.net.SocketTimeoutException: Read timed out
- 03459.637 W: java.net.SocketTimeoutException: Read timed out. Cause: java.net.SocketTimeoutException: Read timed out
- 03468.912 E: org.openstreetmap.josm.io.OsmTransferException: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Premature end of file.. Cause: org.xml.sax.SAXParseException: Premature end of file.
- 03468.914 E: Handled by bug report queue: org.openstreetmap.josm.io.OsmTransferException: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Premature end of file.. Cause: org.xml.sax.SAXParseException: Premature end of file.



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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (37) of main
org.openstreetmap.josm.io.OsmTransferException: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Premature end of file.
	at org.openstreetmap.josm.io.BoundingBoxDownloader.parseNotes(BoundingBoxDownloader.java:265)
	at org.openstreetmap.josm.actions.downloadtasks.DownloadNotesTask$DownloadBoundingBoxTask.realRun(DownloadNotesTask.java:194)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:94)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:142)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)
Caused by: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Premature end of file.
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
	at java.xml@21.0.7/com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(Unknown Source)
	at org.openstreetmap.josm.tools.XmlUtils.parseSafeSAX(XmlUtils.java:123)
	at org.openstreetmap.josm.io.NoteReader.parse(NoteReader.java:246)
	at org.openstreetmap.josm.io.BoundingBoxDownloader.parseNotes(BoundingBoxDownloader.java:259)
	... 8 more