I sent the bug report via the PlayStation crash prompt, but decided to post here as well since I nearly lost my save data from this crash. 

Anyway I was fighting Illagers at Obsidian Pinnacle and was using Torment Quiver shots to shoot through mobs. I don't really know the technicals of the crash but i assume the rapid hits via enemy pushback might have overloaded the game and caused the crash. My save data apparently was corrupted after I reopened the game. I went to my save data and saw the character data was still in my ps4 files, so i uploaded that to see what would happen. The character data was still there when I opened the game the second time.