The u-bolts were left loose, the top plate is missing, the center bolt broke at the nib, and the nib of the lift block also broke.
Whoever did this did a terrible job and should be tarred & feathered on the 6-o-clock news.
DANGEROUS, DO NOT DRIVE.
Have it towed to a shop. It's an easy repair, new u-bolts, new center bolts and new lift blocks.
Replace BOTH sides for safety sake.
I work at a suspension shop that does this exact type of work. It's a 45 min job.
Edit: If you zoom in on the pic of the right rear, you'll see the top plate. It locates the top of the u-bolts, and has a hole that keys off the centerbolt.