Hi Christian,

The following is the relevant part of the stack trace:

> org.basex.gui.view.project.ProjectCellRenderer.getTreeCellRendererComponent(ProjectCellRenderer.java:29)

It is difficult to spot among the rest of the Java function calls.

Kind regards,
Reece

On Sun, 7 Jun 2020 at 07:34, Christian Grün <christian.gruen@gmail.com> wrote:
Yes, this problem seems to be caused by the combination of your Linux environment and the Java version (the stack trace only contains paths to standard Java classes). Which JDK do you use?




Ben Pracht <ben.pracht@gmail.com> schrieb am So., 7. Juni 2020, 06:09:
Hi Folks,

I got this error trying to specify a directory location when creating a database using the GUI by dialog.  Creating the database via command works.  I feel like this is somehow not the fault of BaseX because I don't see this on my other Linux machine.  Nonetheless, I'd like recommendations on how the Linux side of the basex community works.

My setup:
cat /etc/*release
edora release 30 (Thirty)
NAME=Fedora
VERSION="30 (Workstation Edition)"
ID=fedora
VERSION_ID=30
VERSION_CODENAME=""
PLATFORM_ID="platform:f30"
PRETTY_NAME="Fedora 30 (Workstation Edition)"
ANSI_COLOR="0;34"
LOGO=fedora-logo-icon
CPE_NAME="cpe:/o:fedoraproject:fedora:30"
HOME_URL="https://fedoraproject.org/"
DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora/f30/system-administrators-guide/"
SUPPORT_URL="https://fedoraproject.org/wiki/Communicating_and_getting_help"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=30
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=30
PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy"
VARIANT="Workstation Edition"
VARIANT_ID=workstation
Fedora release 30 (Thirty)
Fedora release 30 (Thirty)

export |grep DESKTOP
declare -x DESKTOP_SESSION="/usr/share/xsessions/cinnamon2d"
declare -x GNOME_DESKTOP_SESSION_ID="this-is-deprecated"
declare -x IMSETTINGS_INTEGRATE_DESKTOP="yes"
declare -x XDG_CURRENT_DESKTOP="X-Cinnamon"
declare -x XDG_SESSION_DESKTOP=""


bpracht2@pracht-office-closet basex-rent-world]$ java -cp /home/bpracht/rent-world/basex-rent-world/BaseX.jar:/home/bpracht/rent-world/basex-rent-world/lib/custom/*:/home/bpracht/rent-world/basex-rent-world/lib/*: -Xms2g -Xmx4g org.basex.BaseXGUI

Exception in thread "AWT-EventQueue-1" java.lang.NullPointerException
        at javax.swing.JLabel.setIcon(JLabel.java:406)
        at org.basex.gui.view.project.ProjectCellRenderer.getTreeCellRendererComponent(ProjectCellRenderer.java:29)
        at javax.swing.plaf.basic.BasicTreeUI$NodeDimensionsHandler.getNodeDimensions(BasicTreeUI.java:2807)
        at javax.swing.tree.AbstractLayoutCache.getNodeDimensions(AbstractLayoutCache.java:492)
        at javax.swing.tree.FixedHeightLayoutCache.getBounds(FixedHeightLayoutCache.java:553)
        at javax.swing.tree.FixedHeightLayoutCache.getBounds(FixedHeightLayoutCache.java:199)
        at javax.swing.tree.AbstractLayoutCache.getPreferredHeight(AbstractLayoutCache.java:190)
        at javax.swing.plaf.basic.BasicTreeUI.updateCachedPreferredSize(BasicTreeUI.java:1902)
        at javax.swing.plaf.basic.BasicTreeUI.getPreferredSize(BasicTreeUI.java:2003)
        at javax.swing.plaf.basic.BasicTreeUI.getPreferredSize(BasicTreeUI.java:1991)
        at javax.swing.JComponent.getPreferredSize(JComponent.java:1662)
        at javax.swing.ScrollPaneLayout.layoutContainer(ScrollPaneLayout.java:791)
        at java.awt.Container.layout(Container.java:1513)
        at java.awt.Container.doLayout(Container.java:1502)
        at java.awt.Container.validateTree(Container.java:1698)
        at java.awt.Container.validate(Container.java:1633)
        at javax.swing.RepaintManager$3.run(RepaintManager.java:711)
        at javax.swing.RepaintManager$3.run(RepaintManager.java:709)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
        at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:708)
        at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1731)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
        at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:758)
        at java.awt.EventQueue.access$500(EventQueue.java:97)
        at java.awt.EventQueue$3.run(EventQueue.java:709)
        at java.awt.EventQueue$3.run(EventQueue.java:703)
Best Regards,
Ben Pracht
ben.pracht@gmail.com