No audio playback in only ONE project

PLEASE HELP

I was recording today and all of a sudden I got no playback.

All my routing is fine because Cubase will Playback ANY OTHER project with no issues.

When I got into this one, nothing seems to be routed to the master output, as in no signal is showing although signal is showing on all the tracks.

I saw a forum that said to change my output routing and that did not work.

Has anyone had this issue?

Id’ love to see a screen dump of your mixer (the output bus mostly) and audio connections?