Botania Version:r1.10-354
Forge Version:1.12.2-14.23.4.2705
Mod list:https://pastebin.com/Zsf5A1wL
error logs:https://paste.dimdev.org/igiceqabuh.mccrash
when i join to the server and i watching the spark enity,the Cilent crash

This looks like it could be another data manager bug?

You can see here that Botania reads a value from an EntityDataManager and uses it as an index of an array: https://github.com/Vazkii/Botania/blob/73a1055b65c3aa43917653bc22eed19102d5c1ad/src/main/java/vazkii/botania/common/entity/EntitySpark.java#L340

This value is only ever supposed to be 0-4, but some other mod is messing up the data manager. When Botania tries to read the spark augment type, it is apparently getting 38. More information here #2114 .

Unfortunately, it is very difficult to debug these sorts of things. It's hard to figure out which mod is causing the data managers to get all out of sync.

* Also: Ask your server operator if they see any EntitySpark-related errors in the server console. If it's not a data manager bug, it's possible that the spark itself somehow has a ridiculous value set for the spark augment. That would cause an error in readEntityFromNBT, which would at the very least, print an error in the server console.

This issue is stale because it has been open for a while with no activity. Remove stale label or comment or this will be closed soon.