Hi @r_jain ,
Yes, the error is most likely due to the mismatch in Server/AP versions.
Please see below for how to fix the issue:
com.knime.server.executor.reject_future_workflows=<true|false> [RT]
Specifies whether the executor should reject loading workflows that have been create with future versions of Knime AP. For new installations the value is set to true. If no value is specified the executor will always try to load and execute any workflow by default. Please set this to False if you would like to run workflows created by any Analytics Platform newer than your server/executor version.
This server setting can be configured to allow workflows to run from any newer version of the AP on the server. Although it may work, if nodes have changed in the difference between 4.1 and 4.2 they may not function properly.
Here is the link to the configuration settings for your reference.
https://docs.knime.com/2019-12/server_admin_guide/index.html#knime-server-configuration-file-options
Please let us know if you have any questions.