1.20.1 Installer error for 1.20.1 version

[dark_juanito]

Hello, I get this log file when I try to execute the .jar file:

JVM info: Oracle Corporation - 21.0.2 - 21.0.2+13-LTS-58
java.net.preferIPv4Stack=true
Current Time: 27/02/2024 17:41:34
Host: files.minecraftforge.net [51.79.83.165]
Host: maven.minecraftforge.net [51.79.83.165]
Host: libraries.minecraft.net [13.107.213.42, 13.107.246.42]
Host: launchermeta.mojang.com [13.107.213.42, 13.107.246.42]
Host: piston-meta.mojang.com [13.107.253.42, 13.107.226.42]
java.net.UnknownHostException: No such host is known (authserver.mojang.com)
    at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
    at java.base/java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:52)
    at java.base/java.net.InetAddress$PlatformResolver.lookupByName(InetAddress.java:1211)
    at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1828)
    at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:1139)
    at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1818)
    at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1688)
    at net.minecraftforge.installer.DownloadUtils.getIps(DownloadUtils.java:290)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:120)
Exception in thread "main" 
java.lang.NullPointerException: Cannot invoke "java.util.List.stream()" because the return value of "net.minecraftforge.installer.DownloadUtils.getIps(String)" is null
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:120)
 

I tried with java version 8, 17, 19, 20 and 21 and none of those worked

[lcziin2007]

same problem, they will probably resolve it in a few days.

[Paint_Ninja]

This is a known issue caused by Mojang abruptly removing one of their domain names. A fix is underway.

Announcement from the Forge discord: https://discord.com/channels/1129059589325852724/1129077934330744882/1212091927038533662

Invite link: https://discord.minecraftforge.net

[Paint_Ninja]

Download a fresh copy of the installer and it should be fixed.

https://discord.com/channels/1129059589325852724/1129077934330744882/1212138871907684382