i'm kind of at wits' end, and disappointed with Muse
Apologize for your frustration. While most bugs related to this issue have been tackled in recent versions, there are still scenarios that Muse does not have control over in this situation. If you have any third party widgets or HTML code in your site, I suggest deleting them one by one to see if any of those could be leading to this issue.
I also suggest trying solutions in Some files on the server may be incorrect or missing . For more help, I suggest that you contact Adobe Customer Care Contact Customer Care for further investigation.
thanks! it was an older google analytics widget