Grave (`) is marked as illegal token

I've been trying to transfer a node program I created locally to an EC2 server via Cloud9, and I have already manually replaced all of the (req,res) => {} statements because it didn't accept that. However, now it's giving me

console.log(`foo ${bar}`)
            ^
SyntaxError: Unexpected token ILLEGAL
    at Module._compile (module.js:439:25)
    at Object.Module._extensions..js (module.js:474:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Function.Module.runMain (module.js:497:10)
    at startup (node.js:119:16)
    at node.js:945:3

It works fine on my local server and it runs fine here too, even without nodejs.

var bar = "bar"
console.log(`foo ${bar}`)

The version of node is v13.9.0 and it was installed via nvp. Anyone know why this is happening? I really don't want to go through and convert all the strings with `