Update commands/prefix.js, events/message.js files

commands/prefix.js

 const Discord = require('discord.js');
-exports.run = async(bot, message, args, connection) => {
+exports.run = async(client, message, args, connection) => {
     let prefix = args[0];
     let guildid= message.guild.id;
     var sql = `SELECT prefix FROM guilds WHERE guildid='${guildid}'`;

events/message.js

 module.exports = {
 
     message: (client, settings, Discord, connection) => {
+        
         client.on('message', async message => {
+                       let guildid = message.guild.id;
+            var sql = `SELECT prefix FROM guilds WHERE guildid='${guildid}'`;
+            var prefix = "";
+            connection.query(sql, function (err, result) {
+            if (result.length == 0) prefix = settings.prefix;
+            if (result.length == 1) prefix = result[0].prefix;
+
             if (message.content === '<@771043242242342962>') {
                 const tagged = new Discord.MessageEmbed()
                 .setTitle('Weasht')