discord.js prefix throwing error without command - discord.js

Question

So my bots prefix is ., whenever a user just sends . the bot responds with there was an error trying to execute that command! Which is very annoying. I can not figure out how to get it to not respond to the . with the error
This line should be preventing that, but it is not const command = client.commands.get(commandName) || client.commands.find(cmd => cmd.aliases && cmd.aliases.includes(commandName)); if (!command) return;
client.on("message", message => {
const prefixes = ['.'];
const prefix = prefixes.find(p => message.content.startsWith(p));
if (!prefix) return;
const args = message.content.slice(prefix.length).trim().split(/ +/);
const commandName = args.shift().toLowerCase();
const command = client.commands.get(commandName) || client.commands.find(cmd => cmd.aliases && cmd.aliases.includes(commandName));
if (!command) return;
if (command.guildOnly && message.channel.type === 'dm') {
return message.reply('I can\'t execute that command inside DMs!');
}
if (command.permissions) {
const authorPerms = message.channel.permissionsFor(message.author);
if (!authorPerms || !authorPerms.has(command.permissions)) {
return message.reply('You can not do this!');
}
}
if (command.args && !args.length) {
let reply = `You didn't provide any arguments, ${message.author}!`;
if (command.usage) {
reply += `\nThe proper usage would be: \`${prefix}${command.name} ${command.usage}\``;
}
return message.channel.send(reply);
}
const { cooldowns } = client;
if (!cooldowns.has(command.name)) {
cooldowns.set(command.name, new Discord.Collection());
}
const now = Date.now();
const timestamps = cooldowns.get(command.name);
const cooldownAmount = (command.cooldown || 0) * 1000;
if (timestamps.has(message.guild.id)) {
const expirationTime = timestamps.get(message.guild.id) + cooldownAmount;
if (now < expirationTime) {
const timeLeft = (expirationTime - now) / 1000;
return message.reply(`please wait ${timeLeft.toFixed(1)} more second(s) before reusing the \`${command.name}\` command.`);
}
}
timestamps.set(message.guild.id, now);
setTimeout(() => timestamps.delete(message.guild.id), cooldownAmount);
try {
command.execute(client, message, args, Discord);
} catch (error) {
console.error(error);
message.reply('there was an error trying to execute that command!');
}
});```

Answer 1

You should try checking, if the message is longer than the prefix itself, try changing const prefix to this:
const prefix = prefixes.find(p => message.content.startsWith(p) && message.content.length>p.length);