'Couldn't find that process type' heroku node deployment

I'm getting 'Couldn't find that process type' when I try to do $ heroku ps:scale web=1. I looked at some other solutions that suggested to make sure my Procfile is spelled correctly and pushed correctly, which is.

This is the exact error I get:

    heroku ps:scale web=1
Scaling dynos... !
 ▸    Couldn't find that process type.
Error: ENOENT: no such file or directory, open '/Users/XXXXXX/.cache/heroku/error.log'
    at Object.fs.openSync (fs.js:584:18)
    at Object.fs.writeFileSync (fs.js:1316:33)
    at Object.fs.appendFileSync (fs.js:1362:6)
    at log (/usr/local/Cellar/heroku/6.6.7/libexec/node_modules/heroku-cli-util/lib/errors.js:87:6)
    at handleErr (/usr/local/Cellar/heroku/6.6.7/libexec/node_modules/heroku-cli-util/lib/errors.js:102:9)
    at process._tickCallback (internal/process/next_tick.js:109:7)

via Amir Mousavi