Installed Forge 1.20.1, Ran the installer.jar but it just closes and creates a .log file.
 
	 
 
	JVM info: Oracle Corporation - 20.0.2 - 20.0.2+9-78 
	java.net.preferIPv4Stack=true 
	Current Time: 11/08/2023 16:29:01 
	Host: files.minecraftforge.net [51.79.83.165] 
	Host: maven.minecraftforge.net [51.79.83.165] 
	java.net.UnknownHostException: No such host is known (libraries.minecraft.net) 
	    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$PlatformResolver.lookupByName(InetAddress.java:1061) 
	    at java.base/java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1683) 
	    at java.base/java.net.InetAddress$NameServiceAddresses.get(InetAddress.java:1004) 
	    at java.base/java.net.InetAddress.getAllByName0(InetAddress.java:1673) 
	    at java.base/java.net.InetAddress.getAllByName(InetAddress.java:1533) 
	    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)