Before starting, i skip a lot of point since they wasn't touching this crash (jsut to warn)

What Happens

• Describe what happens: i lunch my wolrd and few secondes after it randomly crash
• Describe, in detail, the steps required to reproduce the issue : join a world and try to play

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What You Expect to Happen

i expect to play into my world ._.

Crash Log

crash log: https://hastebin.com/ikufohuzec.rb (mod list included with the versions)

Affected Versions

• Minecraft:
• Forge: 1.12.2-forge1.12.2-14.23.5.2838
• CraftTweaker: NONE
• Dropt: 1.16.0
• Pyrotech: 1.3.9
• Athenaeum: 1.17.3

The crash log doesn't indicate Pyrotech is causing the stack overflow.

Please provide more of the stack trace, not just the crash snippet. It's usually found toward the end of the log, before the crash snippet.

i actually don't really understand it though since i jsut lunch my game with it and the other mod and it do this and after it crashed randomly after only doing like a move, after i delete it it stopped , but maybe it wasn't this mod but actualy to be fair this mod was the only one who was asking me to reloade or something like this cause to recipe thing (not rlly got time to rea mush)

srry i can't really put it anywhere since its to big :/

so there a mediafire link : https://www.mediafire.com/file/0c8mhnr5aw5tapz/2019-08-25-3.log/file

Thanks for providing the log, however, I don't see anything that indicates what caused the crash.

If I had to guess, I'd say it was probably Optifine.

java.lang.StackOverflowError
    at net.optifine.reflect.Reflector.handleException(Reflector.java:1352)
    at net.optifine.reflect.Reflector.callInt(Reflector.java:879)

ok thaks tho with the helping but i remove your mod and 2 other then i can't remember and it wasn't optifin and after it work perfecly

Please provide more of the stack trace, not just the crash snippet. It's usually found toward the end of the log, before the crash snippet.