[how to run 1.12.2 forge from comman line?]

how to run 1.12.2 forge from comman line?

[how i can get a mapping file like https://maven.fabricmc.net/net/fabricmc/yarn/1.18.2+build.2/yarn-1.18.2+build.2-tiny.gz]

or like https://drive.google.com/file/d/149KIKfPgB4rGHS8CUXQmFTnAVAmqR2d0/view?usp=sharing

[how i can get a mapping file like https://maven.fabricmc.net/net/fabricmc/yarn/1.18.2+build.2/yarn-1.18.2+build.2-tiny.gz]

i need a mapping file for minecraft forge 1.12.2 like https://maven.fabricmc.net/net/fabricmc/yarn/1.18.2+build.2/yarn-1.18.2+build.2-tiny.gz

[forgegradle error: Inherited json file (1.12.2) not found! Maybe you are running in offline mode?]

full crash log:

10:15:39: Executing task 'setupDecompWorkspace'...

> Configure project :
This mapping 'snapshot_20171003' was designed for MC 1.12! Use at your own peril.
C:\Users\angel\.gradle\caches\minecraft\net\minecraftforge\forge\1.12.2-14.23.5.2768\userdev\dev.json could not be parsed

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'lava_hack'.
> java.io.FileNotFoundException: Inherited json file (1.12.2) not found! Maybe you are running in offline mode?

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Deprecated Gradle features were used in this build, making it incompatible with Gradle 5.0.
Use '--warning-mode all' to show the individual deprecation warnings.
See https://docs.gradle.org/4.9/userguide/command_line_interface.html#sec:command_line_warnings

BUILD FAILED in 0s
10:15:40: Task execution finished 'setupDecompWorkspace'.