Apparently publishing the game fixed the issue for them? For me, I see this both in (non-team-create) published games and in published/saved team create games.
This should fail silently instead of spamming the output every playtest.
why is there a character limit for this part of the bug report wizard
A very long warning appears in the console for a core script that I shouldn’t know about.
Issue Area: Studio Issue Type: Display Impact: Moderate Frequency: Constantly Date First Experienced: 2021-09-15 00:09:00 (-06:00) Date Last Experienced: 2021-09-16 00:09:00 (-06:00) A private message is associated with this bug report
Edit: This issue seems to be caused by the core scripts not handling empty descriptions correctly, as discovered by @GolgiToad, so adding a description to your place seems to be a functional workaround to this issue.