Got crash on game load.
Latest spark for 1.12.

Its nice that it tells, that i have wrong Spark, but, why this even an issue? I just checked out mod description on CF and patch notes - mentions nothing about Spark version.

debug.log

Latest Spark is broken, hence why you have to use 1.5.2. Also it is listed in this changelog: https://www.curseforge.com/minecraft/mc-mods/lolasm/files/3763635

• If you're using Spark, you must use Spark 1.5.2, the new version is borked

Oops, seems like missed this one.