Describe the bug
Creash when toggeling jetpack engine on. Even without keybind conflict.
Seems to be an issue with the new cucumber version 4.1.11 because works when downgrading.

Expected behavior
To not crash.

Screenshots / Scripts / Logs
crash-2021-10-28_20.19.05-client.txt

Versions (please complete the following information):

• Minecraft: 1.16.5
• Forge: 36.2.8
• Cucumber: 4.1.11
• Iron Jetpacks: 4.2.1