Exception when trying to start Dreambot using Linux

[dumbass 0]

Im trying to start Dreambot on a Linux machine, but when i start the jar file i get this error.

 

Exception in thread "AWT-EventQueue-0" java.lang.ExceptionInInitializerError
at org.dreambot.Boot.1(Boot.java:460)
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$3.run(EventQueue.java:703)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:74)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:728)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:205)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
Caused by: java.lang.NullPointerException
at sun.awt.FontConfiguration.getVersion(FontConfiguration.java:1264)
at sun.awt.FontConfiguration.readFontConfigFile(FontConfiguration.java:219)
at sun.awt.FontConfiguration.init(FontConfiguration.java:107)
at sun.awt.X11FontManager.createFontConfiguration(X11FontManager.java:774)
at sun.font.SunFontManager$2.run(SunFontManager.java:431)
at java.security.AccessController.doPrivileged(Native Method)
at sun.font.SunFontManager.<init>(SunFontManager.java:376)
at sun.awt.FcFontManager.<init>(FcFontManager.java:35)
at sun.awt.X11FontManager.<init>(X11FontManager.java:57)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at java.lang.Class.newInstance(Class.java:442)
at sun.font.FontManagerFactory$1.run(FontManagerFactory.java:83)
at java.security.AccessController.doPrivileged(Native Method)
at sun.font.FontManagerFactory.getInstance(FontManagerFactory.java:74)
at sun.font.SunFontManager.getInstance(SunFontManager.java:250)
at sun.font.FontDesignMetrics.getMetrics(FontDesignMetrics.java:264)
at sun.swing.SwingUtilities2.getFontMetrics(SwingUtilities2.java:1107)
at javax.swing.JComponent.getFontMetrics(JComponent.java:1617)
at javax.swing.plaf.basic.BasicGraphicsUtils.getPreferredButtonSize(BasicGraphicsUtils.java:276)
at javax.swing.plaf.basic.BasicButtonUI.getPreferredSize(BasicButtonUI.java:376)
at javax.swing.JComponent.getPreferredSize(JComponent.java:1653)
at org.dreambot.0.2.0.4.4(4.java:84)
at org.dreambot.0.2.0.4.0(4.java:48)
at org.dreambot.0.2.0.3.installUI(3.java:43)
at javax.swing.JComponent.setUI(JComponent.java:657)
at javax.swing.JScrollBar.setUI(JScrollBar.java:207)
at org.dreambot.0.2.9.<init>(9.java:48)
at org.dreambot.0.1.1.03.<init>(03.java:45)
at org.dreambot.0.1.7.<clinit>(7.java:53)
... 15 more

 

i really dont know how to look at this error since i'm kind of inexperienced with stuff like this. I'm not just looking for a straight up answer, but also someone who can explain me to solve these kind of errors. That way i will be able to fix it myself in the future.

[Nuclear Nezz 1927]

Looks like an issue with your Java.

Make sure you're running java 8, and that other versions of java are not installed on your system.