WackyWebM - module error

The WackyWebM script has went through many changes since the video was uploaded, so it's possible that you might see an error like this:

node:internal/modules/cjs/loader:xxx
  throw err;
  ^

Error: Cannot find module 'upng-js'

To fix this, simply type run into the command prompt (this also opens a custom interface for easier use).

If this doesn't work, you can install the missing modules manually using npm i