ELYTRA ISSUES IN A CONVERTED WORLD (NOT A DUPLICATE BUG ISSUE)

THIS IS NOT A DUPLICATE BUG! I Have A World Everytime I Use The Elytra In That World It Causes My Game To Crash... PLEASE DO NOT SAY IT'S A DUPLICATE BUG I REPORTED THE BUG BEFORE AND AN ADMIN SAID IT WAS A DUPLICATE BUG REPORT I DIDN'T KNOW WHY THE ELYTRA CRASHED MY WORLD AND MY GAME. IT'S THE ELYTRA!