Below is the entire error shown on the IDE
#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x00007f8776a95def, pid=6047, tid=6089
#
# JRE version: OpenJDK Runtime Environment (11.0.1+13) (build 11.0.1+13)
# Java VM: OpenJDK 64-Bit Server VM (11.0.1+13, mixed mode, tiered, compressed oops, g1 gc, linux-amd64)
# Problematic frame:
# C [libX11.so.6+0x30def] XInternAtom+0x3f
#
# Core dump will be written. Default location: Core dumps may be processed with "/usr/lib/systemd/systemd-coredump %P %u %g %s %t %c %h %e" (or dumping to /home/martin/tempjars/core.6047)
#
# An error report file with more information is saved as:
# /home/martin/tempjars/hs_err_pid6047.log
~e:
(java:6047): Gdk-CRITICAL **: 10:46:03.431: gdk_x11_display_set_window_scale: assertion 'GDK_IS_X11_DISPLAY (display)' failed
#
# If you would like to submit a bug report, please visit:
#
http://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#
Thanks