Installation is simple and easy with only a few requirements.
Languagy is a Spigot API for providing player-individual languages for plugins. It supports over 90 languages. You can still run the plugin without Languagy, but to make the most out of Languagy you can install it on the server.
Download the plugin jar from Spigot and place it in your servers plugin folder. Restart the server.
NEVER use PlugMan, /reload or similar. These methods are extremely unsafe and will break your server / cause unexpected issues. Bug reports will be closed if you are using these plugins and/or reloaded the server.
Your server should start without errors. MCRealistic has now generated the files it needs. Configuration can be found in MCRealistic-2/config.yml. Continue to the configuration section.