JOSM keeps running forever at startup

[anonymous]

What steps will reproduce the problem?

1. Running the latest version of JOSM

What is the expected result?

JOSM to start normally

What happens instead?

It keeps on starting forever

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: 2020-02-24 22:06:28 +0100 (Mon, 24 Feb 2020)
Build-Date:2020-02-24 21:08:22
Revision:15927
Relative:URL: ^/trunk

Identification: JOSM/1.5 (15927 en) Windows 10 64-Bit
OS Build number: Windows 10 Enterprise 1909 (18363)
Memory Usage: 247 MB / 989 MB (185 MB allocated, but free)
Java version: 1.8.0_241-b07, Oracle Corporation, Java HotSpot(TM) Client VM
Screen: \Display0 1600x900
Maximum Screen Size: 1600x900

Plugins:
+ imagery_offset_db
+ turnrestrictions

Last errors/warnings:
- W: Unable to request certificate of https://grca.nat.gov.tw
- W: Unable to request certificate of https://grca.nat.gov.tw
- E: Handled by bug report queue: javax.json.stream.JsonParsingException: Invalid token=EOF at (line no=3, column no=49, offset=97). Expected tokens are: [CURLYOPEN, SQUAREOPEN, STRING, NUMBER, TRUE, FALSE, NULL, SQUARECLOSE]


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: main (1)
javax.json.stream.JsonParsingException: Invalid token=EOF at (line no=3, column no=49, offset=97). Expected tokens are: [CURLYOPEN, SQUAREOPEN, STRING, NUMBER, TRUE, FALSE, NULL, SQUARECLOSE]
	at org.glassfish.json.JsonParserImpl.parsingException(JsonParserImpl.java:437)
	at org.glassfish.json.JsonParserImpl.getArray(JsonParserImpl.java:328)
	at org.glassfish.json.JsonParserImpl.getValue(JsonParserImpl.java:180)
	at org.glassfish.json.JsonParserImpl.getObject(JsonParserImpl.java:339)
	at org.glassfish.json.JsonParserImpl.getObject(JsonParserImpl.java:173)
	at org.openstreetmap.josm.tools.Territories.initializeExternalData(Territories.java:170)
	at org.openstreetmap.josm.tools.Territories.initialize(Territories.java:123)
	at org.openstreetmap.josm.spi.lifecycle.InitializationTask.call(InitializationTask.java:33)
	at org.openstreetmap.josm.spi.lifecycle.Lifecycle.runInitializationTasks(Lifecycle.java:99)
	at org.openstreetmap.josm.spi.lifecycle.Lifecycle.initialize(Lifecycle.java:71)
	at org.openstreetmap.josm.gui.MainApplication.mainJOSM(MainApplication.java:903)
	at org.openstreetmap.josm.gui.MainApplication$3.processArguments(MainApplication.java:276)
	at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:703)

[stoecker]

Closed as duplicate of #18772.