Forge 1.12.2 .jar file not launching - Support & Bug Reports - Forge Forums
How to install Minecraft Forge - Knowledgebase - Plugged Host LLC
How to Add Mods to Minecraft
Shockbyte on Twitter: "In order to install Minecraft Forge on your Minecraft server, you must rename the existing 'Forge Universal Jar File'... Can anyone tell us what you should rename it to?