Impossible to play
I have this error when clicking on the play button :
Exception in thread "AWT-EventQueue-0" java.lang.ExceptionInInitializerError at graphics.guiSkeleton.mapManagement.MapDrawer.drawMap(MapDrawer.java:30) at graphics.guiSkeleton.guiPanel.GamePanel.initialise(GamePanel.java:87) at graphics.guiSkeleton.GraphicsMaster.setGUIStateTo(GraphicsMaster.java:131) at graphics.guiSkeleton.GraphicsMaster.changeGUIStateTo(GraphicsMaster.java:118) at graphics.guiSkeleton.guiPanel.menuPanel.SinglePlayer_MenuPanel.oldPlayButtonAction(SinglePlayer_MenuPanel.java:107) at graphics.graphical_abstraction.panel.menu.SinglePlayer_MenuPanelAbstractionController.oldPlayButtonPressed(SinglePlayer_MenuPanelAbstractionController.java:25) at graphics.guiSkeleton.guiPanel.menuPanel.SinglePlayer_MenuPanel$3.actionPerformed(SinglePlayer_MenuPanel.java:57) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2022) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2348) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252) at java.awt.Component.processMouseEvent(Component.java:6535) at javax.swing.JComponent.processMouseEvent(JComponent.java:3324) at java.awt.Component.processEvent(Component.java:6300) at java.awt.Container.processEvent(Container.java:2236) at java.awt.Component.dispatchEventImpl(Component.java:4891) at java.awt.Container.dispatchEventImpl(Container.java:2294) at java.awt.Component.dispatchEvent(Component.java:4713) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4888) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4525) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4466) at java.awt.Container.dispatchEventImpl(Container.java:2280) at java.awt.Window.dispatchEventImpl(Window.java:2750) at java.awt.Component.dispatchEvent(Component.java:4713) 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:76) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:86) at java.awt.EventQueue$4.run(EventQueue.java:731) at java.awt.EventQueue$4.run(EventQueue.java:729) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:728) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201) 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 graphics.guiSkeleton.tileSpriteLinker.TileSprite.checkSprite(TileSprite.java:95) at graphics.guiSkeleton.tileSpriteLinker.GroundTileSprite.(GroundTileSprite.java:16) at graphics.guiSkeleton.tileSpriteLinker.TileSpriteLinker.(TileSpriteLinker.java:32) at graphics.guiSkeleton.tileSpriteLinker.TileSpriteLinker.(TileSpriteLinker.java:17) ... 43 more