Why is the error displayed and how to fix it?

Question

Java

bonsuar (sorry for not asking a question on rubukkit.org)
I am writing my minecraft plugin, and my passage is underlined in red
19 line, for loop, player variable
help(
Code:

package me.dicksuckerjimoon.jimoonreward;

import org.bukkit.Bukkit;
import org.bukkit.OfflinePlayer;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;

import java.io.IOException;

public class DonateDiscordAPI extends JavaPlugin {

    private DonateDiscordAPI plugin;

    public DonateDiscordAPI(Main main) {
        this.plugin = plugin;
    }

    public static void getPlayerGroup(Player player) throws IOException {
        for (Player <b>player</b> : Bukkit.getOfflinePlayers()) {
            if (player.hasPermission("group.default")) {
                Runtime.getRuntime().exec("/bin/bash -c python3 /Users/antongorestov/JiMoonProjects/JiMoonDonate/test.py");
            }
    }
    }
}

Answer 1

Java syntax forbids reassigning the name of a variable that is already declared in the outer scope
you have the same variable name in the loop and in the method argumentplayer