Indrawan I.

fix: validate image before appending

1

This PR add checks before pushing, I would prefer not adding data which is broke and misleading image url

fix: data should return value

2

So, my patreons was private but the pledges is public already.. But it still https://shieldsio-patreon.vercel.app/api/?username=scathach_bot&type=pledges (https://prnt.sc/6DpmAQl-am6m) I think `toString()` method will broke user which is has some private stuff