Modelio 4.1 under MacOS 11.2.3 Big Sur

!SESSION Tue Mar 23 17:18:53 CET 2021 ------------------------------------------
!ENTRY org.eclipse.equinox.launcher 4 0 2021-03-23 17:18:53.750
!MESSAGE Could not find extension: reference:file:org.eclipse.osgi.compatibility.state_1.1.200.v20180827-1536.jar
!ENTRY org.eclipse.equinox.launcher 4 0 2021-03-23 17:18:53.752
!MESSAGE Exception launching the Eclipse Platform:
!STACK
java.lang.ClassNotFoundException: org.eclipse.core.runtime.adaptor.EclipseStarter
	at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:656)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:595)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1501)

java version "1.8.0_281"
Java(TM) SE Runtime Environment (build 1.8.0_281-b09)
Java HotSpot(TM) 64-Bit Server VM (build 25.281-b09, mixed mode)

-startup
../Eclipse/plugins/org.eclipse.equinox.launcher_1.5.100.v20180827-1352.jar
--launcher.library
../Eclipse/plugins/org.eclipse.equinox.launcher.cocoa.macosx.x86_64_1.1.800.v20180827-1352
-clearPersistedState
-vm
/Library/Java/JavaVirtualMachines/jdk1.8.0_281.jdk/Contents/Home/bin/java
-vmargs
-Xms512m
-Dpython.console.encoding=UTF-8
-Dosgi.requiredJavaVersion=1.8
--add-modules=ALL-SYSTEM
-XstartOnFirstThread
-Dorg.eclipse.swt.internal.carbon.smallFonts