Caching the next row to display failed. This is an implementation error.

Hi all,

I’m running Knime 5.8.1 using the classic UI on a virtual machine on a corporate network and today I’ve seen an error I’ve never seen before, which has completely prevented me from working all day. When running a lot of python scripting nodes (that I’ve run hundreds or thousands of times before) the table output has ERROR in the RowID all the way down and then empty values across the whole table.

I believe the scripts are running as the console output in the scripting node itself is there. However, this is not transferred over to the main console output. When I open the tables, the console is filled with the message in the title “Caching the next row to display failed. This is an implementation error”

I found a post on the old user forum from 2023 talking about this error, but that was a user running with column-based backend. I have tried running with both row and column based and I get the same issues.

Has anyone seen this before and has a fix? I’m not able to update to a newer version as this is not possible on my current network. The modern interface is also unusable on the virtual machine due it hogging all my CPU power.

Thanks in advance,

Ian