What do I do about 429 Unknown Error on EC2 AWS server using R?

url = "websiteExample/.json"readLines(url, warn = F)

Output:

Error in file(con, "r") :   cannot open the connection to 'websiteExample/.json'In addition: Warning message:In file(con, "r") :  cannot open URL 'websiteExample.json': HTTP status was '429 Unknown Error'

If I do this on an EC2 box in R - I immediately get that error. I don't get it after hitting a bunch of times. It's on the first try. I tried doing another instance and it still didn't work.