so im using a grave mod that stores your items when you die so that might be part of why its not working but when i specify certain items to be kept it just refuses to do its job its this one specifically, https://www.curseforge.com/minecraft/mc-mods/youre-in-grave-danger#:~:text=You're%20in%20Grave%20Danger%20is%20a%20mod%20centered%20around,it%20was%20before%20you%20died. or you can search it by "youre in grave danger"

Edit: yup its a compatiblity issue