java.lang.NullPointerException
	at java.base/java.util.Objects.requireNonNull(Unknown Source)
	at net.sourceforge.plantuml.posimo.Path.<init>(Path.java:61)
	at net.sourceforge.plantuml.dot.CucaDiagramTxtMaker.<init>(CucaDiagramTxtMaker.java:118)
	at net.atmp.CucaDiagram.createFilesTxt(CucaDiagram.java:371)
	at net.atmp.CucaDiagram.exportDiagramInternal(CucaDiagram.java:395)
	at net.sourceforge.plantuml.UmlDiagram.exportDiagramNow(UmlDiagram.java:142)
	at net.sourceforge.plantuml.AbstractPSystem.exportDiagram(AbstractPSystem.java:198)
	at net.sourceforge.plantuml.servlet.DiagramResponse.sendDiagram(DiagramResponse.java:170)
	at net.sourceforge.plantuml.servlet.UmlDiagramService.doDiagramResponse(UmlDiagramService.java:108)
	at net.sourceforge.plantuml.servlet.UmlDiagramService.doGet(UmlDiagramService.java:70)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:500)
	at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:587)
	at org.eclipse.jetty.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1410)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764)
	at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1624)
	at org.eclipse.jetty.websocket.servlet.WebSocketUpgradeFilter.doFilter(WebSocketUpgradeFilter.java:164)
	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:202)
	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1594)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:506)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:131)
	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:578)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:223)
	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1571)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1375)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:463)
	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1544)
	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1297)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)
	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:149)
	at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:51)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
	at org.eclipse.jetty.server.Server.handle(Server.java:562)
	at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:418)
	at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:675)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:410)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)
	at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:319)
	at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
	at org.eclipse.jetty.io.SocketChannelEndPoint$1.run(SocketChannelEndPoint.java:101)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.runTask(AdaptiveExecutionStrategy.java:412)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.consumeTask(AdaptiveExecutionStrategy.java:381)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.tryProduce(AdaptiveExecutionStrategy.java:268)
	at org.eclipse.jetty.util.thread.strategy.AdaptiveExecutionStrategy.lambda$new$0(AdaptiveExecutionStrategy.java:138)
	at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:407)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:894)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1038)
	at java.base/java.lang.Thread.run(Unknown Source)