cPanel 76 switched the cPanel and WHM version of PHP from 5.6 to 7.2. Because of this Softaculous no longer works. I think it's because Softaculous needs to be re-encoded with a newer version of IonCube.
When you click on Softaculous, you see the following in cPanel:
Child failed to make LIVEAPI connection to cPanel.
I've ensured that IonCube is enabled for cPanel and WHM.