How to fix a bug in the game?

Question

Java

I downloaded the cheat for minecraft. installed it and run it. Outputs an error. Launched on different launchers. Error in cheat or java? Here is the error itself.

[L] Getting Minecraft arguments...
[L] Launching Minecraft...
[L] Starting Minecraft 1.12.2-Impact_4.7.3
[L] Launching in: /home/grigory/.minecraft
[L] Processing post-launch actions. Assist launch: true
===============================================================================================
OpenJDK 64-Bit Server VM warning: Option UseConcMarkSweepGC was deprecated in version 9.0 and will likely be removed in a future release.
Exception in thread "main" java.lang.ClassCastException: java.base/jdk.internal.loader.ClassLoaders$AppClassLoader cannot be cast to java.base/java.net.URLClassLoader
  at net.minecraft.launchwrapper.Launch.<init>(Launch.java:34)
  at net.minecraft.launchwrapper.Launch.main(Launch.java:28)
[L] Launcher stopped.
[L] Minecraft closed with exit code: 1

Probably this.

Answer 1

Grisha, cheats are not good.
The error may be in the cheat and in the incompatibility of the cheat with openJDK, it may be worth installing OracleJDK.

Answer 2

Error in cheat