How to get rid of this message - "You don't have access to this workspace."

Everytime I log into smartsheet, I am confronted with this message. "You don't have access to this workspace. The workspace may have been removed or unshared." I must then separately click on Home or Browse in order to see my data. Apparently, I was previously associated with a workspace for which I was not the owner, and which has been removed. I don't want or need access to that workspace, nor do I even know what it is. It's not showing up anywhere in my lists. How do I get rid of this annoying message?