My save file keeps crashing in Caves and Cliffs: Part 2

Everytime I try to open this file and copies of it, a window pops up saying that there was an error when trying to load the world. It all started in Caves and Cliffs: Part 1 when I backed out to the menu to make a copy of my file before I went back in to fight the Wither that I placed deep underground so it wouldn’t destroy my home. Can you please fix it? This is the latest update to the PS4 version of Caves and Cliffs: Part 2. It has a little over 1GB of data and few months of hard work put into it. The file is still clearly there based on how long it takes to load and make a copy of it and one time, when I tried to load it, it showed a brief preview of where I left off before backing out again, so I know it’s stll working. It doesn’t it’s corrupted either, it just doesn’t load the world.