Having problems publishing my dashboard into Tableau Server

Hi,

I have a workbook with 8 dashboards. Before, everytime I publish my dashboards, It only takes less than 3 minutes to deploy all my dashboards in to the server.

Now, I cannot published it on the server. What I am currently seeing on my screen is a window that says Getting data from server and showing the Elapsed time. The elapsed time shows 19:++ and counting.

Is there a problem on the tableau server that I need to fix?

thanks,

Joefer