Is this workbook a local copy, or a copy of the workbook that was downloaded from Tableau Server? If it is a local copy, you may be running into an issue where the workbook is trying to sign into an old Tableau Server machine that is connected to the local workbook data extract. Please see the following Quick Fix article which may be able to resolve your issue
To me that just looks like the workbook is connected to a published data source on that Server/Site that you're currently signed into. I'd check that all your data sources are local and none are looking at Tableau Server.
if you want to "force" the workbook to look at a particular Server/Site - open a new instance of Tableau Desktop and sign in to the desired environment. Then re-open the workbook and it will automatically point to that environment - keep in mind this might cause the workbook not to load properly if that Server environment doesn't have the same data source(s) published.
Thank you guys
great tips by both, don't forget to mark the answer as correct if it resolved your issue.