Build the server around the exact Java route
For Java Edition, the checked project is Verity JE. Current public records include the
Modrinth verity-6.0.0.jar beta under version 5ech0sTo and
the stable verity-5.7.3.jar route under CurseForge record 8461257
and Modrinth version yAt0wv1Z. Both current routes are for Minecraft 1.20.1 Forge
at this check. If a video or Discord message names an older NeoForge 1.21.1 file such as
verity-3.4.1.jar, treat that as a separate legacy branch, not the default server setup.
A good Verity Mod server test is boring on purpose. Install the matching Forge server, run it once, stop it, add the same Verity JE file and required dependencies, accept the EULA only if you understand Mojang's server terms, then start with a fresh world. Join once from a client profile that has the same mod and dependency set. If the server fails before anyone joins, read the server log for loader, dependency, or Java runtime errors. If it runs alone but fails after inviting friends, compare every client's mod list before changing the server file.