1.8.9 installer issue

[Kontrail]

I download 1.8.9 recommended and/or latest installer, I run it, I click "Run" it runs and does basically nothing, if I run it on my home screen however, a txt file appears.
I've updated java, reinstalled it, ran normal 1.8.9 minecraft, but no luck.
I don't know if it affects it but I am running Windows 7.
I know this isn't supported but I don't know where else to get help
This is what the txt file says - 

Exception in thread "main" java.lang.ExceptionInInitializerError
    at net.minecraftforge.installer.ClientInstall.getSponsorMessage(ClientInstall.java:326)
    at net.minecraftforge.installer.InstallerAction.getSponsorMessage(InstallerAction.java:59)
    at net.minecraftforge.installer.InstallerPanel.updateFilePath(InstallerPanel.java:236)
    at net.minecraftforge.installer.InstallerPanel.<init>(InstallerPanel.java:217)
    at net.minecraftforge.installer.SimpleInstaller.launchGui(SimpleInstaller.java:153)
    at net.minecraftforge.installer.SimpleInstaller.main(SimpleInstaller.java:40)
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

Please let me know if there's any other information I need to give.

Edited December 10, 2020 by Kontrail