crash when starting JOSM

[anonymous]

What steps will reproduce the problem?

1. install update 17084 (Win EXE)
2. upon automatic application start, this error comes up

What is the expected result?

JOSM opens

What happens instead?

JOSM throws an error, possibly liased to the MapWith AI extension, because this is being loaded when it appears

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: 2020-10-03 13:42:38 +0200 (Sat, 03 Oct 2020)
Build-Date:2020-10-04 01:30:47
Revision:17084
Relative:URL: ^/trunk

Identification: JOSM/1.5 (17084 de) Windows 10 64-Bit
OS Build number: Windows 10 Enterprise 1803 (17134)
Memory Usage: 247 MB / 989 MB (141 MB allocated, but free)
Java version: 1.8.0_271-b09, Oracle Corporation, Java HotSpot(TM) Client VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1920x1080 (scaling 1.0x1.0), \Display1 2560x1080 (scaling 1.0x1.0)
Maximum Screen Size: 2560x1080
Best cursor sizes: 16x16 -> 32x32, 32x32 -> 32x32

Plugins:
+ BuildingGeneralization (23)
+ DirectUpload (35583)
+ HouseNumberTaggingTool (35581)
+ ImportImagePlugin
+ ImproveWay (29)
+ PicLayer (2a9aa7a)
+ ShapeTools (1240)
+ SimplifyArea (35579)
+ apache-commons (35524)
+ apache-http (35092)
+ buildings_tools
+ cadastre-fr
+ contourmerge (v0.1.6)
+ ejml (35313)
+ geotools (35169)
+ imagery_offset_db (35405)
+ jna (35092)
+ jts (35122)
+ log4j (35092)
+ mapwithai
+ measurement (35579)
+ reltoolbox (35602)
+ terracer (35579)
+ turnrestrictions (35515)
+ utilsplugin2 (35476)

Map paint styles:
+ https://josm.openstreetmap.de/josmfile?page=Styles/MapWithAI&zip=1

Last errors/warnings:
- 00039,668 E: Region [TMS_BLOCK_v2] : Problem loading keys for file TMS_BLOCK_v2
- 00043,999 E: Handled by bug report queue: java.lang.UnsupportedClassVersionError: org/openstreetmap/josm/plugins/mapwithai/MapWithAIPlugin has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0


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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: main (1)
java.lang.UnsupportedClassVersionError: org/openstreetmap/josm/plugins/mapwithai/MapWithAIPlugin has been compiled by a more recent version of the Java Runtime (class file version 55.0), this version of the Java Runtime only recognizes class file versions up to 52.0
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(Unknown Source)
	at java.security.SecureClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.defineClass(Unknown Source)
	at java.net.URLClassLoader.access$100(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.net.URLClassLoader$1.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(Unknown Source)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at org.openstreetmap.josm.plugins.PluginClassLoader.loadClass(PluginClassLoader.java:73)
	at java.lang.ClassLoader.loadClass(Unknown Source)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Unknown Source)
	at org.openstreetmap.josm.plugins.PluginInformation.loadClass(PluginInformation.java:382)
	at org.openstreetmap.josm.plugins.PluginHandler.loadPlugin(PluginHandler.java:803)
	at org.openstreetmap.josm.plugins.PluginHandler.loadPlugins(PluginHandler.java:892)
	at org.openstreetmap.josm.plugins.PluginHandler.loadLatePlugins(PluginHandler.java:944)
	at org.openstreetmap.josm.gui.MainApplication.loadLatePlugins(MainApplication.java:1158)
	at org.openstreetmap.josm.gui.MainApplication.mainJOSM(MainApplication.java:922)
	at org.openstreetmap.josm.gui.MainApplication$3.processArguments(MainApplication.java:277)
	at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:714)

[taylor.smock]

You should probably update the plugin.

I need to recompile the following versions:
v0.2.11 (Java 11/major version 55, JOSM 15233)
v1.4.4 (Java 11, JOSM 16220)
v1.5.6 (Java 11, JOSM 16284).

In all cases, you should update to v1.7.0, since you are on JOSM 17084.