"I have encountered this error after log in on Rapid miner program, Ubuntu 18.04.2"

marquizq

Exception: java.lang.IllegalArgumentException
Message: null
Stack trace:
java.base/java.util.concurrent.ThreadPoolExecutor.setCorePoolSize(ThreadPoolExecutor.java:1560)
com.rapidminer.extension.concurrency.execution.BackgroundExecutionService.updatePoolSize(BackgroundExecutionService.java:125)
com.rapidminer.extension.concurrency.execution.BackgroundExecutionService.access$000(BackgroundExecutionService.java:71)
com.rapidminer.extension.concurrency.execution.BackgroundExecutionService$2.handleLicenseEvent(BackgroundExecutionService.java:112)
com.rapidminer.license.internal.DefaultLicenseManager.handleLicenseEvent(DefaultLicenseManager.java:1219)
com.rapidminer.license.internal.DefaultLicenseManager.setActiveLicense(DefaultLicenseManager.java:509)
com.rapidminer.license.internal.DefaultLicenseManager.storeNewLicense(DefaultLicenseManager.java:419)
com.rapidminer.core.license.ProductConstraintManager.installNewLicense(ProductConstraintManager.java:310)
com.rapidminer.tools.nexus.NexusConnectionManager.installLicenses(NexusConnectionManager.java:116)
com.rapidminer.tools.nexus.NexusConnectionManager.installLicenses(NexusConnectionManager.java:251)
com.rapidminer.tools.nexus.NexusConnectionManager.installAvailableLicenses(NexusConnectionManager.java:204)
com.rapidminer.gui.license.onboarding.EmailVerificationCard$1.run(EmailVerificationCard.java:111)
com.rapidminer.gui.tools.ProgressThread$3.run(ProgressThread.java:561)
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135)
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
java.base/java.lang.Thread.run(Thread.java:844)

rfuentealba

Hello, @marquizq

I may be wrong, but this error message looks like the one coming from trying to use RapidMiner with Java 11/12, which is not supported yet, I think. Make sure you install and activate Oracle Java 8 and set the $JAVA_HOME variable before starting RapidMiner Studio.

To confirm this, if you could give us the output of executing java -version on a Terminal, it would be great help.

All the best,

Rodrigo.