mac pro enters sleep mode or turns off
Just upgraded to High Sierra (10.13.1) with Late-2013 Mac Pro and since the upgrade, the mac turns off by itself.
Have checked energy saver settings and they are the same as before the upgrade (Prevent computer from sleeping is checked, wake for network access is checked, and enable power nap is checked. Have turn display off after 1 hour set with a screen saver set for 15 minutes).
Checked support recommendations and reset NVRAM. About two hours later the computer locked with the screen saver picture frozen on the display.
Any recommendations would be greatly appreciated.
Mac Pro (Late 2013), macOS High Sierra (10.13.1)