What is the black piece above the bottom bracket on this bike?
It looks like a SWAT box (tube, co2, levers and multitool) see https://www.cyclingabout.com/2018-specialized-diverge-light-touring-bikes  from https://www.topvelo.fr/actualite-materiel-velo-nouveau-specialized-diverge-serieusement-rapide-serieusement-fun-3-993.html