I suck at NBT tags and all of that stuff. I'm trying to use a command that teleports me to the nearest item entity (melon slice). I can't open my world 'till I find a command or else my precious melon will despawn.
create a backup of your world and try to run this command. I saw your previous post about this and I noticed you said your melon might be in an unloaded chunk. The problem with that is: commands can't access data in unloaded chunks (99% sure of that). Also, you can get a new melon slice with commands since you are already using them.
/give @s melon_slice
/give @s glistering_melon_slice
I was really desperate because i died deep in a huge jungle and lost all of my stuff, and i remember a melon slice being one of them, and i was so desperate to get my stuff back that I wanted to use commands. But I made new gear and built an automatic melon farm since i made this post, so I got over it.