Problems with setupDecompWorkspace in powershell

Hi everyone, I'm very new to minecraft modding and I was trying to setup my workspace yesterday. I had my JDK and Intellij installed, but I got into some trouble with Forge MDK. I extracted all the files in the MDK zip into my folder and opened powershell. When I entered this,

gradlew.bat setupDecompWorkspace

it responded me with

FAILURE: Build failed with an exception.

* What went wrong:
A problem occurred configuring root project 'dev'.
> Could not resolve all artifacts for configuration ':classpath'.
   > Could not resolve net.minecraftforge.gradle:ForgeGradle:3.+.
     Required by:
         project :
      > Failed to list versions for net.minecraftforge.gradle:ForgeGradle.
         > Unable to load Maven meta-data from https://files.minecraftforge.net/maven/net/minecraftforge/gradle/ForgeGradle/maven-metadata.xml.
            > Could not get resource 'https://files.minecraftforge.net/maven/net/minecraftforge/gradle/ForgeGradle/maven-metadata.xml'.
               > Could not GET 'https://files.minecraftforge.net/maven/net/minecraftforge/gradle/ForgeGradle/maven-metadata.xml'.
                  > Connect to files.minecraftforge.net:443 [files.minecraftforge.net/127.0.1.2] failed: Connection refused: connect
      > Failed to list versions for net.minecraftforge.gradle:ForgeGradle.
         > Unable to load Maven meta-data from https://jcenter.bintray.com/net/minecraftforge/gradle/ForgeGradle/maven-metadata.xml.
            > Could not get resource 'https://jcenter.bintray.com/net/minecraftforge/gradle/ForgeGradle/maven-metadata.xml'.
               > Could not GET 'https://jcenter.bintray.com/net/minecraftforge/gradle/ForgeGradle/maven-metadata.xml'.
                  > Connect to jcenter.bintray.com:443 [jcenter.bintray.com/127.0.1.3] failed: Connection refused: connect
      > Failed to list versions for net.minecraftforge.gradle:ForgeGradle.
         > Unable to load Maven meta-data from https://repo.maven.apache.org/maven2/net/minecraftforge/gradle/ForgeGradle/maven-metadata.xml.
            > Could not get resource 'https://repo.maven.apache.org/maven2/net/minecraftforge/gradle/ForgeGradle/maven-metadata.xml'.
               > Could not GET 'https://repo.maven.apache.org/maven2/net/minecraftforge/gradle/ForgeGradle/maven-metadata.xml'.
                  > Connect to repo.maven.apache.org:443 [repo.maven.apache.org/127.0.1.4] failed: Connection refused: connect

* 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

I could not figure out what went wrong. Huge thanks to anyone who can solve this problem for me :)