/home/container/node_modules/discord.js/src/structures/CommandInteractionOptionResolver.js:112
      throw new TypeError('COMMAND_INTERACTION_OPTION_NO_SUB_COMMAND');
            ^

TypeError [COMMAND_INTERACTION_OPTION_NO_SUB_COMMAND]: No subcommand specified for interaction.
    at CommandInteractionOptionResolver.getSubcommand (/home/container/node_modules/discord.js/src/structures/CommandInteractionOptionResolver.js:112:13)
    at Client.<anonymous> (/home/container/index.js:302:32)
    at Client.emit (node:events:394:28)
    at InteractionCreateAction.handle (/home/container/node_modules/discord.js/src/client/actions/InteractionCreate.js:66:12)
    at Object.module.exports [as INTERACTION_CREATE] (/home/container/node_modules/discord.js/src/client/websocket/handlers/INTERACTION_CREATE.js:4:36)
    at WebSocketManager.handlePacket (/home/container/node_modules/discord.js/src/client/websocket/WebSocketManager.js:345:31)
    at WebSocketShard.onPacket (/home/container/node_modules/discord.js/src/client/websocket/WebSocketShard.js:443:22)
    at WebSocketShard.onMessage (/home/container/node_modules/discord.js/src/client/websocket/WebSocketShard.js:300:10)
    at WebSocket.onMessage (/home/container/node_modules/ws/lib/event-target.js:132:16)
    at WebSocket.emit (node:events:394:28) {
  [Symbol(code)]: 'COMMAND_INTERACTION_OPTION_NO_SUB_COMMAND'
}

if (interaction.options.getSubcommand() === 'user') {
        const user = interaction.options.getUser('target');

  			if (user) {
  				await interaction.reply(`Username: ${user.username}\nID: ${user.id}`);
          let user = interaction.member;
          const roles = interaction.member.roles.cache.map(role => role);
          let roleStuff = []
          roles.forEach(role => {
            roleStuff.push(role.id);
          });

          const embed = new Discord.MessageEmbed()
            .setColor("ff2445")
            .setThumbnail(user.user.avatarURL())
            .setTitle(`${user.tag}`)
            .addField("ID:", `\`${user.id}\``, true)
            .addField("Nickname:", `${user.nickname !== null ? `${user.nickname}` : '`None`'}`, true)
            .addField("Status:", `\`${user.presence}\``, true)
            .addField("In Server", `\`${user.guild.name}\``, true)
            .addField("Bot:", `\`${user.user.bot}\``, true)
            .addField("Joined The Server On:", `\`${user.joinedAt}\``, true)
            .addField("Account Created On:", `\`${user.user.createdAt}\``, true)
            .addField("Roles:", user.roles.cache.map(roles => `${roles}`).join(', '), true)
          await interaction.reply( {embeds: [embed]} );
  			} else {
  				await interaction.reply(`Your username: ${interaction.user.username}\nYour ID: ${interaction.user.id}`);
  			}

// When registering a new slash command, open a PowerShell window locally (on computer not Ptero panel)
// and do node deploy-commands.js.
const { SlashCommandBuilder } = require('@discordjs/builders');
const { REST } = require('@discordjs/rest');
const { Routes } = require('discord-api-types/v9');
const { clientId, guildId, token } = require('./config.json');

const commands = [
	new SlashCommandBuilder().setName('ping').setDescription('Replies with pong!'),
	new SlashCommandBuilder().setName('server').setDescription('Replies with server info!'),
	new SlashCommandBuilder().setName('user').setDescription('Gets user\'s info').addUserOption(option => option.setName('mentionable').setDescription('User stuff')),
]
	.map(command => command.toJSON());

const rest = new REST({ version: '9' }).setToken(token);

rest.put(Routes.applicationGuildCommands(clientId, guildId), { body: commands })
	.then(() => console.log('Successfully registered application commands.'))
	.catch(console.error);