Forge doesn't show up in launcher

[Space Cat]

I downloaded the 1.12.2 installer jar (1.12.2-14.23.5.2847) and ran it. It says that the installation is finished, but there's no version of forge on my launcher. I look in the versions folder and there is a forge version, but it doesn't show up in my launcher. I uninstalled the Java and installed again,tried download differents versions of the forge but nothing works.I also tried to install the 1.10.2 version and the same thing happens (1.10.2-12.18.3.2185). I tried making a new Profile/Installation, and selecting Forge from the version dropdown, but it doens't work too.

I use SKlauncher,and I have installed the forge version 1.14 and 1.13 and it works fine,but other versions don't work. Here is the log:

Quote

java.net.preferIPv4Stack=true
Considering library net.minecraftforge:forge:1.12.2-14.23.5.2847: Not Downloading {Wrong Side}
Considering library net.minecraft:launchwrapper:1.12: Not Downloading {Wrong Side}
Considering library org.ow2.asm:asm-all:5.2
Considering library org.jline:jline:3.5.1: Not Downloading {Wrong Side}
Considering library net.java.dev.jna:jna:4.4.0: Not Downloading {Wrong Side}
Considering library com.typesafe.akka:akka-actor_2.11:2.3.3
Checking "C:\Users\USER\AppData\Roaming\.minecraft\libraries\com\typesafe\akka\akka-actor_2.11\2.3.3\akka-actor_2.11-2.3.3.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library com.typesafe:config:1.2.1
Checking "C:\Users\USER\AppData\Roaming\.minecraft\libraries\com\typesafe\config\1.2.1\config-1.2.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-actors-migration_2.11:1.1.0
Checking "C:\Users\USER\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-actors-migration_2.11\1.1.0\scala-actors-migration_2.11-1.1.0.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-compiler:2.11.1
Checking "C:\Users\USER\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-compiler\2.11.1\scala-compiler-2.11.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang.plugins:scala-continuations-library_2.11:1.0.2
Checking "C:\Users\USER\AppData\Roaming\.minecraft\libraries\org\scala-lang\plugins\scala-continuations-library_2.11\1.0.2\scala-continuations-library_2.11-1.0.2.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang.plugins:scala-continuations-plugin_2.11.1:1.0.2
Checking "C:\Users\USER\AppData\Roaming\.minecraft\libraries\org\scala-lang\plugins\scala-continuations-plugin_2.11.1\1.0.2\scala-continuations-plugin_2.11.1-1.0.2.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-library:2.11.1
Checking "C:\Users\USER\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-library\2.11.1\scala-library-2.11.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-parser-combinators_2.11:1.0.1
Checking "C:\Users\USER\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-parser-combinators_2.11\1.0.1\scala-parser-combinators_2.11-1.0.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-reflect:2.11.1
Checking "C:\Users\USER\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-reflect\2.11.1\scala-reflect-2.11.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-swing_2.11:1.0.1
Checking "C:\Users\USER\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-swing_2.11\1.0.1\scala-swing_2.11-1.0.1.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library org.scala-lang:scala-xml_2.11:1.0.2
Checking "C:\Users\USER\AppData\Roaming\.minecraft\libraries\org\scala-lang\scala-xml_2.11\1.0.2\scala-xml_2.11-1.0.2.jar" internal checksums
    checksums.sha1 validated successfully
    Jar contents validated successfully
Considering library lzma:lzma:0.0.1: Not Downloading {Wrong Side}
Considering library net.sf.jopt-simple:jopt-simple:5.0.3: Not Downloading {Wrong Side}
Considering library java3d:vecmath:1.5.2
Considering library net.sf.trove4j:trove4j:3.0.3
Considering library org.apache.maven:maven-artifact:3.5.3
Extracting: /forge-1.12.2-14.23.5.2847-universal.jar
To:          C:\Users\USER\AppData\Roaming\.minecraft\libraries\net\minecraftforge\forge\1.12.2-14.23.5.2847\forge-1.12.2-14.23.5.2847.jar