"Could not save the model: admin has made changes to this model" Error

I’m getting the error in the image below, can you help?

Hi @sedef

The most ideal solution to do here is to close the page where this error was received and continue from the tab where we made the last change. Otherwise, our work will be wasted as the overwrite other model selection we will make from here will discard the previous change. When proceeding with Save as, a second duplicated version will be created without making any changes to the previous copy. However, there will be a problem such as manual merging of the two versions.