You're looking for a paper, presumably a Minecraft server paper, specifically for EagleCraft 1.12.2.
EagleCraft is a popular Minecraft server software, and I'll provide you with a direct link to the paper for version 1.12.2. eaglecraft 1.12.2
, you can also check the official EagleCraft documentation or forums for more information on setting up your server. You're looking for a paper, presumably a Minecraft