FancyDrop v2.9.2: Failed to load config file (is the config file corrupt?) (Unexpected token: Undefined)

This has only been happening since the last forced wipe on 3rd December, which was the Supply Drop graphical update

Whenever I try to reload it with updated config, it will always show the same error

Use a JSon Validator on your config, there is more than likely an issue you are not seeing.

Thanks, I found my mistake