Projectlibre wont start at ubuntu

On My Ubuntu Projectlibre installed form Snap wont start… Does anybody knw what to do? Terminal gives me this error:

jenda@jenda-lenovo:~$ projectlibre
Picked up _JAVA_OPTIONS: -Duser.home=/home/jenda/snap/projectlibre/5
java.lang.NullPointerException
at com.projectlibre1.preference.ConfigurationFile.getDirectoryBundle(Unknown Source)
at com.projectlibre1.strings.Messages.getStringFromBundles(Unknown Source)
at com.projectlibre1.strings.Messages.getString(Unknown Source)
at com.projectlibre1.configuration.Settings.<clinit>(Unknown Source)
at com.projectlibre1.pm.graphic.frames.ApplicationStartupFactory.<init>(Unknown Source)
at com.projectlibre1.pm.graphic.gantt.Main.main(Unknown Source)
at com.projectlibre1.main.Main.main(Unknown Source)
Exception in thread “main” java.lang.InternalError: java.lang.reflect.InvocationTargetException
at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:86)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.desktop/sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74)
at java.desktop/sun.font.SunFontManager.getInstance(SunFontManager.java:249)
at java.desktop/sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:265)
at java.desktop/sun.java2d.SunGraphics2D.getFontMetrics(SunGraphics2D.java:861)
at org.pushingpixels.flamingo.internal.ui.common.CommandButtonLayoutManagerBig.updateTitleStrings(Unknown Source)
at org.pushingpixels.flamingo.internal.ui.common.CommandButtonLayoutManagerBig.<init>(Unknown Source)
at org.pushingpixels.flamingo.internal.ui.common.CommandButtonLayoutManagerCustom.<init>(Unknown Source)
at org.pushingpixels.flamingo.api.common.CommandButtonDisplayState$1.createLayoutManager(Unknown Source)
at org.pushingpixels.flamingo.internal.ui.common.BasicCommandButtonUI.installUI(Unknown Source)
at java.desktop/javax.swing.JComponent.setUI(JComponent.java:685)
at org.pushingpixels.flamingo.api.common.JCommandButton.updateUI(Unknown Source)
at org.pushingpixels.flamingo.api.common.JCommandButton.<init>(Unknown Source)
at org.pushingpixels.flamingo.internal.ui.common.BasicScrollablePanelUI.createLeadingScroller(Unknown Source)
at org.pushingpixels.flamingo.internal.ui.common.BasicScrollablePanelUI.installComponents(Unknown Source)
at org.pushingpixels.flamingo.internal.ui.common.BasicScrollablePanelUI.installUI(Unknown Source)
at java.desktop/javax.swing.JComponent.setUI(JComponent.java:685)
at org.pushingpixels.flamingo.api.common.JScrollablePanel.updateUI(Unknown Source)
at java.desktop/javax.swing.JPanel.<init>(JPanel.java:86)
at java.desktop/javax.swing.JPanel.<init>(JPanel.java:109)
at java.desktop/javax.swing.JPanel.<init>(JPanel.java:117)
at org.pushingpixels.flamingo.api.common.JScrollablePanel.<init>(Unknown Source)
at com.projectlibre.ui.ribbon.ProjectLibreRibbonUI.installComponents(Unknown Source)
at com.projectlibre.ui.ribbon.ProjectLibreRibbonUI.installUI(Unknown Source)
at java.desktop/javax.swing.JComponent.setUI(JComponent.java:685)
at org.pushingpixels.flamingo.api.ribbon.JRibbon.updateUI(Unknown Source)
at org.pushingpixels.flamingo.api.ribbon.JRibbon.<init>(Unknown Source)
at org.pushingpixels.flamingo.api.ribbon.JRibbon.<init>(Unknown Source)
at org.pushingpixels.flamingo.api.ribbon.JRibbonFrame.initRibbon(Unknown Source)
at org.pushingpixels.flamingo.api.ribbon.JRibbonFrame.<init>(Unknown Source)
at com.projectlibre1.pm.graphic.frames.MainRibbonFrame.<init>(Unknown Source)
at com.projectlibre1.pm.graphic.frames.MainFrameFactory.creareMainFrame(Unknown Source)
at com.projectlibre1.pm.graphic.gantt.Main.main(Unknown Source)
at com.projectlibre1.main.Main.main(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at java.desktop/sun.font.FontManagerFactory$1.run(FontManagerFactory.java:84)
… 34 more
Caused by: java.lang.NullPointerException
at java.desktop/sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1262)
at java.desktop/sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:225)
at java.desktop/sun.awt.FontConfiguration.init(FontConfiguration.java:107)
at java.desktop/sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:719)
at java.desktop/sun.font.SunFontManager$2.run(SunFontManager.java:379)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.desktop/sun.font.SunFontManager.<init>(SunFontManager.java:324)
at java.desktop/sun.awt.FcFontManager.<init>(FcFontManager.java:35)
at java.desktop/sun.awt.X11FontManager.<init>(X11FontManager.java:56)
… 39 more