Boot layer error when initializing: unable to derive module descriptor

 I'm trying to get some RinSim examples running on IntelliJ Idea Ultimate 2018.1.4. I've tried following the instructions on http://rinsim.rinde.nl/installation/intellij/, but I run into the following error when performing step 11 in the guide:

Error occurred during initialization of boot layer
java.lang.module.FindException: Unable to derive module descriptor for /home/svka/.m2/repository/org/jppf/jppf-client/4.1.3/jppf-client-4.1.3.jar
Caused by: java.lang.module.InvalidModuleDescriptorException: Provider class org.jppf.server.scheduler.bundle.providers.RLBundlerProvider not in module

The JDK I'm using is:

openjdk 10.0.1 2018-04-17
OpenJDK Runtime Environment (build 10.0.1+10-Ubuntu-3ubuntu1)
OpenJDK 64-Bit Server VM (build 10.0.1+10-Ubuntu-3ubuntu1, mixed mode)

JRE: 1.8.0_152-release-1136-b39 amd64

Furthermore, I'm on Kubuntu 18.04.

The example runs on Eclipse, so I suppose there is something wrong with some settings in IntelliJ or something similar, but I have no clue on what to look for and can't find any similar posts by googling. Any help or pointers would be greatly appreciated.