Hi David,
the error is caused not by Server, but by Desktop when it’s run from the command line. It’s known issue that can appear sometimes with warnings. As a workaround, you can suppress warnings in action “Calculate new column(s)”, table “pohoda - ceny”.
See here how to suppress warnings of an action: 💡 Announcement: Warnings in EasyMorph
We’ll fix the issue in the next release.