NoBoost

Minecraft 版本： 1.13 1.13.1 1.13.2 1.14 1.14.1 1.14.2 1.14.3 1.14.4 1.15 1.15.1 1.15.2 1.16 1.16.1 1.16.2 1.16.3 1.16.4 1.16.5 1.17 1.17.1 1.18 1.18.1 1.18.2 1.19 1.19.1 1.19.2 1.19.3 1.19.4 1.20 1.20.1

平台： paper purpur

This plugin disables using rockets to boost speed with elytra's while still letting fireworks be usable as normal

Edit config to change message (or disable it outright), supports minimessage colors ( etc)
Have fun!