Modpack version
1.6.2
Can the issue be reproduced?
I'm not sure how reproducable it is, but every time I load my survival world, it crashes.

Logs
https://pastebin.com/index.php?e=1
Issue
It caused me to log out, I've reached almost "Bragging Rights"

If this is a feature request, feel free to delete the template.

Your pastebin link is empty, try using gist.github.com instead

My apologies, I was a bit otherwise involved. I attempted loading the world one more time, and here is that crash report. https://gist.github.com/johnch18/2b6a565c88299f4ac89a153deda4ad95 . Tomorrow when I get back from things I need to do, I'll try reloading a backup prior to the crash and see if I can duplicated the crash from there.

Gist

E2E crash

E2E crash. GitHub Gist: instantly share code, notes, and snippets.

Looks like an item in your inventory (Blood Magic Snare) has errored in some way. Edit it out of your playerdata, or delete it entirely to fix it :)