Error while executing operator "Read Database" with the name "Read total instances" in Java

New Altair Community Member

Jan 18, 2018

Updated Nov 5, 2024 by Jocelyn

Hello,

I am new to rapidminer and I am trying to get an old program running. It is an Java project using the rapidminer command line mode.

Since it is an older project it was developed with a rapidminer version 5.x. I tried to run it with several newer versions, which are available with maven.
While running the program throws following error:
com.rapidminer.operator.UserError: The dummy operator Read total instances (replacing null) cannot be executed.

The process it self is runnable inside rapidminer studio.

I also tried playing aroung with the versioning in rapidminer studio, but with no success.

You can find the process attached.

I don't know what my mistake could be. Hopefully you have an idea.

Thanks