Internal SSD not showing up in Disk Utility after erase

I have a 2013 Mac Pro and have used it for quite some time. I decided to factory reset the Mac Pro by going to Disk Utility. I clicked on the internal SSD (Macintosh - HD) and erased it. However, I forgot to install the OS after. I turned it off for a while until I remembered to install the OS. I started up the Mac Pro and saw a flashing folder with a question mark. I shut it down and turned it on again while pressing command + R where it went to recovery mode. I then went to disk utility to install the OS again only to find out that that Macintosh - HD is no longer there. There is no internal drive anymore. It's almost as if the SSD is no longer mounted or physically there. The SSD is an Intel® SSD 660p Series (2.0TB, M.2 80mm PCIe 3.0 x4, 3D2, QLC). I've attached a picture of what I see. I want it to appear on the left side again as an internal disk so I can install MacOS and start using it again. Can anyone help? Thanks