We are building an autism server based on Spigot 1.8.8 and using some behavior logging plugins from HeapCraft. During the process, we found the interface address in the old plugin(for Minecraft 1.8) is outdated, so we tried to compat downward based on the source of plugin for Minecraft 1.12.2. However, that didn't work. We think it may due to some changes in the format of the data packet.
The obvious solution is to compat downward based on latest plugin source, if it's not convenient for you, please let me know if there are other solutions. Thank you!