java.lang.ArrayIndexOutOfBoundsException: Index -6 out of bounds for length 160 at net.sourceforge.plantuml.asciiart.BasicCharAreaImpl.drawChar(BasicCharAreaImpl.java:74) at net.sourceforge.plantuml.asciiart.BasicCharAreaImpl.drawStringLR(BasicCharAreaImpl.java:126) at net.sourceforge.plantuml.klimt.drawing.txt.UGraphicTxt.draw(UGraphicTxt.java:91) at net.sourceforge.plantuml.klimt.drawing.AbstractUGraphicHorizontalLine.draw(AbstractUGraphicHorizontalLine.java:77) at net.sourceforge.plantuml.klimt.creole.legacy.AtomText.drawU(AtomText.java:150) at net.sourceforge.plantuml.klimt.creole.SheetBlock1.drawU(SheetBlock1.java:199) at net.sourceforge.plantuml.klimt.creole.SheetBlock2.drawU(SheetBlock2.java:104) at net.sourceforge.plantuml.timingdiagram.TimingRuler.drawTimeAxisAutomatic(TimingRuler.java:257) at net.sourceforge.plantuml.timingdiagram.TimingRuler.drawTimeAxis(TimingRuler.java:215) at net.sourceforge.plantuml.timingdiagram.TimingDiagram.drawInternal(TimingDiagram.java:177) at net.sourceforge.plantuml.timingdiagram.TimingDiagram.access$0(TimingDiagram.java:134) at net.sourceforge.plantuml.timingdiagram.TimingDiagram$1.drawU(TimingDiagram.java:112) at net.atmp.ImageBuilder.writeImageInternal(ImageBuilder.java:256) at net.atmp.ImageBuilder.write(ImageBuilder.java:231) at net.sourceforge.plantuml.timingdiagram.TimingDiagram.exportDiagramInternal(TimingDiagram.java:104) at net.sourceforge.plantuml.UmlDiagram.exportDiagramNow(UmlDiagram.java:138) at net.sourceforge.plantuml.AbstractPSystem.exportDiagram(AbstractPSystem.java:207) at net.sourceforge.plantuml.servlet.DiagramResponse.sendDiagram(DiagramResponse.java:160) at net.sourceforge.plantuml.servlet.UmlDiagramService.doGet(UmlDiagramService.java:94) at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:717) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1644) at org.eclipse.jetty.websocket.server.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:164) at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1615) at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:550) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143) at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:568) at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:221) at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1110) at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:479) at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:183) at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1044) at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:199) at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:109) at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) at org.eclipse.jetty.server.Server.handle(Server.java:459) at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:281) at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:232) at org.eclipse.jetty.io.AbstractConnection$1.run(AbstractConnection.java:505) at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:607) at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:536) at java.base/java.lang.Thread.run(Thread.java:832) An error has occured : java.lang.ArrayIndexOutOfBoundsException: Index -6 out of bounds for length 160 Aren't we supposed to hold all the cards ? Diagram size: 12 lines / 75 characters. PlantUML (1.2024.4beta6) cannot parse result from dot/GraphViz. Please go to https://plantuml.com/graphviz-dot to check your GraphViz version. Java Runtime: Java(TM) SE Runtime Environment JVM: Java HotSpot(TM) 64-Bit Server VM Default Encoding: UTF-8 Language: en Country: US PLANTUML_LIMIT_SIZE: 4000 This may be caused by : - a bug in PlantUML - a problem in GraphViz You should send this diagram and this image to plantuml@gmail.com or post to https://plantuml.com/qa to solve this issue. You can try to turn around this issue by simplifing your diagram.