Fireworks with elytra not working for me

[heady flume]

Every time when i try to use a firework while flying on elytra it does not fire.
With every click an error shows up.
[14:05:48] [Server thread/ERROR]:Failed to handle packet net.minecraft.class_2886@35e06bcd, suppressing errorjava.lang.NullPointerException: null

Hmm, it seems the error is not the same every time
[14:32:37] [Server thread/ERROR]:Failed to handle packet net.minecraft.class_2886@617ce1fd, suppressing errorjava.lang.NullPointerException: null
[14:32:40] [Server thread/ERROR]:Failed to handle packet net.minecraft.class_2886@539909a5, suppressing errorjava.lang.NullPointerException: null
[14:32:40] [Server thread/ERROR]:Failed to handle packet net.minecraft.class_2886@1337ccf, suppressing errorjava.lang.NullPointerException: null
[14:32:41] [Server thread/ERROR]:Failed to handle packet net.minecraft.class_2886@a0d8db7, suppressing errorjava.lang.NullPointerException: null
[14:32:41] [Server thread/ERROR]:Failed to handle packet net.minecraft.class_2886@33691d5, suppressing errorjava.lang.NullPointerException: null
[14:32:41] [Server thread/ERROR]:Failed to handle packet net.minecraft.class_2886@4a3112f8, suppressing errorjava.lang.NullPointerException: null
[14:32:41] [Server thread/ERROR]:Failed to handle packet net.minecraft.class_2886@37217c93, suppressing errorjava.lang.NullPointerException: null

[oblique sorrel]

Are you on an older version of the pack? Rocket elytra flight used to gated behind killing the ender dragon, iirc. Was discussed here: https://discord.com/channels/570630340075454474/1273774201211453450

[heady flume]

im on AOF7 2.5.1

i have tried pasting "minecraft:story/root" and it works now!
Thank you