Crash the game while reading the End Poem

 This bug was discovered by accident. After many tests, I found a way to accurately trigger this bug.
 Only one animation controller is added to player.json, the rest have not been modified
 Test version: 1.19.31, enable "Upcoming Creator Features"
 Create a new world and load this behavior pack, then go directly to the end to kill the dragon, jump into the portal, and the game crashes
 Even executing these commands indirectly through a function will cause a crash at certain times (see above)
 You can choose one of the following commands to test (just give you an example, not tested)
 /execute as @a at @s run testfor @s
 /execute as @a at @s run testfor nobody
 /execute run say awa
 /execute as @a at @s if entity @s run say awa
 /function test

 Supplement, it seems that as long as it is a new version of /execute

Additional testing has shown that only reading the End Verse will cause the game to crash