Minecraft Forge 1.12.2 (14.21.1.2443)

Hello There !

 can i ask some trouble here, when i want to install Minecraft Forge 1.12.2 (14.21.1.2443) it won't open and in installer jar.txt file its come error :
 

Exception in thread "main" java.lang.ExceptionInInitializerError
    at net.minecraftforge.installer.ClientInstall.getSponsorMessage(ClientInstall.java:401)
    at net.minecraftforge.installer.InstallerAction.getSponsorMessage(InstallerAction.java:60)
    at net.minecraftforge.installer.InstallerPanel.updateFilePath(InstallerPanel.java:334)
    at net.minecraftforge.installer.InstallerPanel.<init>(InstallerPanel.java:315)
    at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:164)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:51)
Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
    at net.minecraftforge.installer.MirrorData.buildMirrorList(MirrorData.java:84)
    at net.minecraftforge.installer.MirrorData.<init>(MirrorData.java:63)
    at net.minecraftforge.installer.MirrorData.<clinit>(MirrorData.java:17)
    ... 6 more

Any idea for fixing this?
Thanks.

forge-1.12-14.21.1.2443-installer.jar.log