This issue occurs on multiple devices, and has only occurred when saving/publishing a game from a RBXL file to a group-owned experience. Myself and others have attempted to overwrite a group-owned experience from an RBXL and have been met with the error below.
This can be reproduced by simply taking any RBXL file and attempting to overwrite a group-owned experience, either by publishing or saving. This issue occurred for different RBXL files and different groups/experiences.