Hey Annemieke,
Thank you for clarifying this. I do not have a specific code solution for this at this time, but I would like to clarify that I confirmed with our developers that this “error” is actually not an outright error—nothing is quite broken, necessarily, and there should be no negative impact of this on your site.
The message is just a diagnostic “notice”, and while we will be ensuring this doesn’t arise any more in our next update, it’s not anything problematic at its core.
Do you find any issues with Maps behavior on your site, though? If so, can you elaborate on these issues and share links to the specific pages where they are visible on your site?
Thank you!
George