Configuration with Minecraft - I can't change the parameters in the file "server.properties"

System Information

Field Value
Operating System Linux - Debian GNU/Linux 12 on x86_64
Product AMP ‘Callisto’ v2.5.1.8 (Mainline)
Virtualization Docker
Application Minecraft
Module MinecraftModule
Running in Container Yes
Current State Sleeping

Problem Description

Issue

The server does not save the parameters that I have changed and changes them to the default parameters

Reproduction Steps

  • Turning off the server
  • server.properties → online-mode → false → save
  • start server

Are you using BungeeCord or Velocity?

I use the standard paper setup, nothing else - vanilla server

So why do you need to change the setting?

My friends can’t log in to the server because of the parameter in server.properties

We will not assist you in allowing people who have pirated the game to join the server. It is not something we will discuss.