I found a problem in your website.that in whitelist for free account there was an api for get random meme the api was 'meme-api.herokuapp.com'. but I found that in the official GitHub page they said that
Meme API ⚠️ Heroku has discontinued support for free Dynos, so the old Domain meme-api.herokuapp.com has stopped working ⚠️
Please update your apps to the new Domain meme-api.com to continue using the API
But I tried with new api but not working because of the website that is not in whitelist so please change these api from meme-api.herokuapp.com to new API Link : https://meme-api.com/gimme
Check out the official GitHub page: https://github.com/D3vd/Meme_Api