Unexpected token '?' in Rest - discord.js

Question

I'm trying to add slash commands to my discord bot using Discord.js and Rest but I keep getting an unexpected token somewhere in rest. Could anybody help me?
When I run:
const { SlashCommandBuilder, Routes } = require('discord.js');
const { REST } = require('#discordjs/rest');
var clientId = //myClientId
var guildId = //myGuildId
const commands = [
new SlashCommandBuilder().setName('ping').setDescription('Replies with pong!')
]
commands.map(command => command.toJSON());
const rest = new REST({ version: '10' }).setToken(process.env.TOKEN);
(async () => {
try {
console.log('Started refreshing application (/) commands.');
await rest.put(
Routes.applicationCommands(clientId),
{ body: commands },
);
console.log('Successfully reloaded application (/) commands.');
} catch (error) {
console.error(error);
}
})();
I Get:
/home/runner/TinkerTank/node_modules/#discordjs/rest/dist/lib/CDN.cjs:53
extension: extension ?? "png"
^
SyntaxError: Unexpected token '?'
at wrapSafe (internal/modules/cjs/loader.js:915:16)
at Module._compile (internal/modules/cjs/loader.js:963:27)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
at Module.load (internal/modules/cjs/loader.js:863:32)
at Function.Module._load (internal/modules/cjs/loader.js:708:14)
at Module.require (internal/modules/cjs/loader.js:887:19)
at require (internal/modules/cjs/helpers.js:74:18)
at Object.<anonymous> (/home/runner/TinkerTank/node_modules/#discordjs/rest/dist/index.cjs:5:13)
at Module._compile (internal/modules/cjs/loader.js:999:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
If somebody could help me out that would be great.

Answer 1

maby this will help you. npm install node#16.13.1 --save-dev --save-exact
For me, this solved the problem.
I found this here