Originally under settings.cfg it says
FORGEVER=14.23.5.2847
FORGEURL=https://files.minecraftforge.net/maven/net/minecraftforge/forge/**1.12.2-14.23.5.2847**/forge-1.12.2-14.23.5.2854-installer.jar

And it failed so i found the issue that is in the last digits of FORGEVER and FORGEURL
FORGEVER=14.23.5.2854
FORGEURL=https://files.minecraftforge.net/maven/net/minecraftforge/forge/**1.12.2-14.23.5.2854**/forge-1.12.2-14.23.5.2854-installer.jar