unable to start Helyx-os

[SURNEDRA]

I have loaded as per instructions https://engys.github.io/HELYX-OS/installation/ on ubuntu 20.04.6 LTS
I get below error
java.lang.UnsatisfiedLinkError: /home/snp/Helyx_ox/Engys/Engys/HELYX-OS/v2.4.0/ext/libvtkChartsCoreJava.so: /home/snp/Helyx_ox/Engys/Engys/HELYX-OS/v2.4.0/ext/libjawt.so: undefined symbol: awt_Unlock, version SUNWprivate_1.1
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary1(ClassLoader.java:1939)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1864)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1854)
at java.lang.Runtime.loadLibrary0(Runtime.java:845)
at java.lang.System.loadLibrary(System.java:1084)
at vtk.vtkNativeLibrary.LoadLibrary(vtkNativeLibrary.java:214)
at eu.engys.util.VTKSettings._LoadAllNativeLibraries(VTKSettings.java:72)
at eu.engys.util.VTKSettings.LoadAllNativeLibraries(VTKSettings.java:41)
at eu.engys.vtk.modules.VTK3DModule.configure(VTK3DModule.java:53)
at com.google.inject.AbstractModule.configure(AbstractModule.java:59)
at com.google.inject.spi.Elements$RecordingBinder.install(Elements.java:223)
at com.google.inject.spi.Elements.getElements(Elements.java:101)
at com.google.inject.internal.InjectorShell$Builder.build(InjectorShell.java:133)
at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:103)
at com.google.inject.Guice.createInjector(Guice.java:95)
at com.google.inject.Guice.createInjector(Guice.java:72)
at eu.engys.launcher.Launcher.main(Launcher.java:96)
0 - main - ERROR VTKSettings - vtkInteractionStyleJava NOT loaded
1 - main - ERROR VTKSettings - vtkInteractionWidgetsJava NOT loaded
2 - main - ERROR VTKSettings - vtkInteractionImageJava NOT loaded
2 - main - ERROR VTKSettings - vtkGeovisCoreJava NOT loaded
2 - main - ERROR VTKSettings - vtkAcceleratorsDaxJava NOT loaded
3 - main - ERROR VTKSettings - vtkAcceleratorsPistonJava NOT loaded
3 - main - ERROR VTKSettings - vtkDomainsChemistryJava NOT loaded
5 - main - ERROR VTKSettings - vtkIOPostgreSQLJava NOT loaded
5 - main - ERROR VTKSettings - vtkIOMPIImageJava NOT loaded
6 - main - ERROR VTKSettings - vtkIOVPICJava NOT loaded
6 - main - ERROR VTKSettings - vtkIOImportJava NOT loaded
7 - main - ERROR VTKSettings - vtkIOParallelLSDynaJava NOT loaded
7 - main - ERROR VTKSettings - vtkIOXdmf2Java NOT loaded
7 - main - ERROR VTKSettings - vtkIOMPIParallelJava NOT loaded
8 - main - ERROR VTKSettings - vtkIOMINCJava NOT loaded
8 - main - ERROR VTKSettings - vtkIOParallelJava NOT loaded
8 - main - ERROR VTKSettings - vtkIOExportJava NOT loaded
9 - main - ERROR VTKSettings - vtkIOGDALJava NOT loaded
9 - main - ERROR VTKSettings - vtkIOMySQLJava NOT loaded
9 - main - ERROR VTKSettings - vtkIOFFMPEGJava NOT loaded
10 - main - ERROR VTKSettings - vtkIOParallelExodusJava NOT loaded
10 - main - ERROR VTKSettings - vtkIOParallelNetCDFJava NOT loaded
10 - main - ERROR VTKSettings - vtkIOODBCJava NOT loaded
11 - main - ERROR VTKSettings - vtkIOGeoJSONJava NOT loaded
11 - main - ERROR VTKSettings - vtkParallelMPIJava NOT loaded
12 - main - ERROR VTKSettings - vtkPythonInterpreterJava NOT loaded
12 - main - ERROR VTKSettings - vtkViewsGeovisJava NOT loaded
13 - main - ERROR VTKSettings - vtkViewsInfovisJava NOT loaded
13 - main - ERROR VTKSettings - vtkViewsCoreJava NOT loaded
13 - main - ERROR VTKSettings - vtkViewsContext2DJava NOT loaded
14 - main - ERROR VTKSettings - vtkInfovisParallelJava NOT loaded
14 - main - ERROR VTKSettings - vtkInfovisBoostGraphAlgorithmsJava NOT loaded
15 - main - ERROR VTKSettings - vtkRenderingLODJava NOT loaded
15 - main - ERROR VTKSettings - vtkRenderingGL2PSJava NOT loaded
15 - main - ERROR VTKSettings - vtkRenderingFreeTypeJava NOT loaded
16 - main - ERROR VTKSettings - vtkRenderingAnnotationJava NOT loaded
16 - main - ERROR VTKSettings - vtkRenderingVolumeJava NOT loaded
17 - main - ERROR VTKSettings - vtkRenderingVolumeOpenGLJava NOT loaded
17 - main - ERROR VTKSettings - vtkRenderingFreeTypeOpenGLJava NOT loaded
18 - main - ERROR VTKSettings - vtkRenderingMatplotlibJava NOT loaded
18 - main - ERROR VTKSettings - vtkRenderingLICJava NOT loaded
19 - main - ERROR VTKSettings - vtkRenderingParallelJava NOT loaded
20 - main - ERROR VTKSettings - vtkRenderingVolumeAMRJava NOT loaded
21 - main - ERROR VTKSettings - vtkRenderingLabelJava NOT loaded
21 - main - ERROR VTKSettings - vtkRenderingQtJava NOT loaded
21 - main - ERROR VTKSettings - vtkRenderingCoreJava NOT loaded
22 - main - ERROR VTKSettings - vtkRenderingImageJava NOT loaded
22 - main - ERROR VTKSettings - vtkRenderingContext2DJava NOT loaded
23 - main - ERROR VTKSettings - vtkRenderingParallelLICJava NOT loaded 23 - main - ERROR VTKSettings - vtkRenderingOpenGLJava NOT loaded
23 - main - ERROR VTKSettings - vtkTestingRenderingJava NOT loaded
24 - main - ERROR VTKSettings - vtkFiltersParallelMPIJava NOT loaded
24 - main - ERROR VTKSettings - vtkFiltersReebGraphJava NOT loaded
24 - main - ERROR VTKSettings - vtkFiltersHybridJava NOT loaded
25 - main - ERROR VTKSettings - vtkFiltersStatisticsGnuRJava NOT loaded
25 - main - ERROR VTKSettings - vtkFiltersParallelJava NOT loaded
26 - main - ERROR VTKSettings - vtkFiltersParallelGeometryJava NOT loaded
26 - main - ERROR VTKSettings - vtkFiltersParallelFlowPathsJava NOT loaded
27 - main - ERROR VTKSettings - vtkFiltersParallelStatisticsJava NOT loaded
28 - main - ERROR VTKSettings - vtkFiltersParallelImagingJava NOT loaded
28 - main - ERROR VTKSettings - vtkWebGLExporterJava NOT loaded
29 - main - ERROR VTKSettings - vtkWebCoreJava NOT loaded
29 - main - ERROR VTKSettings - vtkChartsCoreJava NOT loaded
+++ Loading LookAndFeel +++
+++ Check License +++
+++ Loading Application +++
+++ Loading View +++
+++ Start Application +++
+++ Loading Menu Bar +++
+++ Loading Status Bar +++
+++ Loading Toolbar +++
+++ Layout Mesh +++
+++ Layout Base Mesh +++
+++ Layout Geometry +++
+++ Layout Lines +++
+++ Layout Material Point +++
+++ Layout Mesh +++
+++ Layout Custom +++
+++ Layout Case Setup +++
+++ Layout Solution Modelling +++
+++ Layout Materials +++
+++ Layout Boundary Conditions +++
+++ Layout Cell Zones +++
+++ Layout Numerical Schemes +++
+++ Layout Solver Settings +++
+++ Layout Runtime Controls +++
+++ Layout Fields Initialisation +++
+++ Layout Custom +++
+++ Layout 6 DOF Domain Motion +++
+++ Layout Rigid Body Domain Motion +++
+++ Layout Phases +++
+++ Layout Solver +++
+++ Layout Run Options +++
+++ Layout Runtime Controls +++
+++ Layout Residuals +++
+++ Layout Mesh +++
Exception in thread "GUI Dispatch Queue" java.awt.HeadlessException:
No X11 DISPLAY variable was set, but this program performed an operation which requires it.
at java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:207)
at java.awt.Window.(Window.java:535)
at java.awt.Frame.(Frame.java:420)
at javax.swing.JFrame.(JFrame.java:224)
at eu.engys.application.AbstractApplication$2.(AbstractApplication.java:128)
at eu.engys.application.AbstractApplication.initFrame(AbstractApplication.java:128)
at eu.engys.application.AbstractApplication$1.run(AbstractApplication.java:102)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:721)
at java.awt.EventQueue.access$200(EventQueue.java:103)
at java.awt.EventQueue$3.run(EventQueue.java:682)
at java.awt.EventQueue$3.run(EventQueue.java:680)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:691)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

Need help , I am not good in Ubuntu/Linus
Regards
Surendra