Exception in thread "main" java.lang.StringIndexOutOfBoundsException

[vgiotsas]

I'm trying to run the simulator in Ubuntu 20.04.4 LTS with openjdk 11.0.16 2022-07-19 and Apache Maven 3.8.6

When I'm trying to run the simple.cfg file I get the following exception:

/service-discovery$ ./run.sh config/simple.cfg
Simulator: loading configuration[config/simple.cfg]
ConfigProperties: File config/simple.cfg loaded.
Simulator: starting experiment 0 invoking peersim.edsim.EDSimulator
Random seed: 24685



EDSimulator: resetting
Network: no node defined, using GeneralNode
EDSimulator: running initializers
- Running initializer init.0randlink: class peersim.dynamics.WireKOut
- Running initializer init.1uniqueNodeID: class peersim.kademlia.CustomDistribution
- Running initializer init.2statebuilder: class peersim.kademlia.StateBuilder
Merging groups
Your network is connected
EDSimulator: loaded controls [control.0traffic, control.3]
Current time: 0
>>>[0] Scheduling new MSG_FIND for 44679646088748448298203248111083314944732970519232921080965672368072094281099
Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: -1
	at java.base/java.lang.String.substring(String.java:1841)
	at peersim.kademlia.KademliaNode.getTopicNum(KademliaNode.java:132)
	at peersim.kademlia.KademliaObserver.increaseNodeStatsBy(KademliaObserver.java:344)
	at peersim.kademlia.KademliaObserver.accountMsg(KademliaObserver.java:606)
	at peersim.kademlia.KademliaObserver.reportMsg(KademliaObserver.java:736)
	at peersim.kademlia.KademliaProtocol.processEvent(KademliaProtocol.java:431)
	at peersim.edsim.EDSimulator.executeNext(EDSimulator.java:280)
	at peersim.edsim.EDSimulator.nextExperiment(EDSimulator.java:321)
	at peersim.Simulator.main(Simulator.java:170)

Thank you!