Virtualmin hangs on Letsencrypt

Sorry if this has been covered already, but it seems randomly I have issues with a new server install not getting a certificate from letsencrypt. No error’s given I request the certificate and the red bar starts across the top of the screen, the wheel comes up in the top right and that’s it. It sits there like that, for hours. I left it go overnight yesterday and was still the same in the am.

I currently have 2 servers doing this. I can hit refresh on the browser or hit one of the options on the menu and it will quit the certificate thing and load the page normally for the next operation. just won;t get a letsencrypt certificate.