Did you start a server with mods installed and none of them are working or loading? There are two things you need to check.
Using correct server jar
A common mistake a lot of people making creating Forge servers for the first time is attempting to run the server using the minecraft_server.jar instead of the Forge server jar.
Correctly install mods
Make sure that the mod is correctly installed in the mods/ folder and you’ve downloaded our mods from a genuine source and not a third reposting site. You can find our mods officially on CurseForge.
Other Guides
💬 ML Support FAQ (PLEASE READ FIRST!!!)
Author: Jonathing
💬 Which versions of Minecraft do you support?
Author: Jonathing
💬 Can I port one of your mods?
Author: Jonathing
💬 Mods aren't loading on my server!
Author: Lachney
💬 Do you make Fabric mods?
Author: Lachney and Silver_David
💬 How do I install Minecraft mods?
Author: Lachney, Jonathing, and JoltLiz
💬 Change Default Java Installation (Windows 10)
Author: Lachney and Jonathing
💬 Why can't I use Java 11 or above?
Author: Jonathing
💬 How do I get out of the Dream or Nightmare dimension?
Author: Lachney
💬 How do I configure Dungeons Plus?
Author: Silver_David
💬 How do I configure Beta Days?
Author: Lachney
💬 Can you update/port this mod?
Author: Lachney
💬 Why is my modpack crashing?
Author: Lachney