User is kicked when using /backpack

[DG7Fender]

I am using Minepacks 2.5.3 but have tried several versions. The issue is due to an incompatibility with a fork of paper. I am running a hybrid server with Youer(Mohist). Plugin works fine on spigot hybrid but we are transitioning to paper and this is the only plugin left to fix. https://pastebin.com/TGyWtKf4 https://pastebin.com/wiu49h7M

[GeorgH93]

Please try if this build fixes your issue.

[Legithawk]

https://pastebin.com/DWsHbrQw

This is the error we now get when using the command, it still kicks the player, and I believe the startup error is now gone.

Please try if this build fixes your issue.

[GeorgH93]

Looks like there is more where their reflection remapping is expecting something different. I will look at it once I have more time.
Until then, setting UseDynamicTitle to false should make it at least work as a workaround.

[DG7Fender]

Setting UseDynamicTitle to false did not fix the issue.