Summary:
Air force says it shot down all 89 Russian drones
Ukraine says drone attack was one of war’s largest
No casualties or major damage reported
“This is one of the most massive attacks by Shahed-131/136 strike drones,” the air force said

Ukraine air defense was improved recently, this is probably Russia making a large attack, in an attempt to overwhelm the defense systems.
Well done by Ukraine on defending so well against it.