ascii art on plantuml server - java.lang.IllegalArgumentException

Question

Hi!

I wanted to generate ascii art on plantuml server - http://www.plantuml.com/plantuml/form

and I got this error:

java.lang.IllegalArgumentException
	at net.sourceforge.plantuml.posimo.Path.<init>(Path.java:50)
	at net.sourceforge.plantuml.cucadiagram.dot.CucaDiagramTxtMaker.<init>(CucaDiagramTxtMaker.java:101)
	at net.sourceforge.plantuml.cucadiagram.CucaDiagram.createFilesTxt(CucaDiagram.java:338)
	at net.sourceforge.plantuml.cucadiagram.CucaDiagram.exportDiagramInternal(CucaDiagram.java:296)
	at net.sourceforge.plantuml.UmlDiagram.exportDiagram(UmlDiagram.java:249)
	at net.sourceforge.plantuml.SourceStringReader.generateDiagramDescription(SourceStringReader.java:167)
	at net.sourceforge.plantuml.SourceStringReader.generateDiagramDescription(SourceStringReader.java:149)
	at net.sourceforge.plantuml.servlet.DiagramResponse.sendDiagramInternal(DiagramResponse.java:185)
	at net.sourceforge.plantuml.servlet.DiagramResponse.access$0(DiagramResponse.java:165)
	at net.sourceforge.plantuml.servlet.DiagramResponse$1.runJob(DiagramResponse.java:157)
	at net.sourceforge.plantuml.api.TimeoutExecutor$MyThread.run(TimeoutExecutor.java:77)

 

I used this code to get the error

@startuml

node "Example" {
  interface Cx
  interface Dx
  [SLF] <--> Dx

  folder "HSS" {
  [LGen1] <--> Cx
  [LGen2] <--> Cx
}

}
 
node "ICSCF" {
}

node "SCSCF" {
}
[Cx] <--> ICSCF : Cx
[Dx] <--> SCSCF : Dx
[Cx] <--> SCSCF : Cx
[Dx] <--> ICSCF : Dx

@enduml