minecraft can't load my world's entity data

minecraft can't load my world's entity data. all of my pets were suffocated 'cause minecraft couldn't read entity's position. and all of my chest and item frame became empty, my banners became black

my old backup file(that was working perfectly) does same exactly

please i'm desperate this world was a part of me and my cousin's precious memory

i'll leave the save file on my drive plz help me

https://drive.google.com/drive/folders/1lMKCmOIsCMg7LFgxRhcfor8nqgwSFEf1?usp=sharing