429 Too Many Requests (RFC 6585)
The user has sent too many requests in a given amount of time. Intended for use with rate-limiting schemes.
Thank you, do you have a recommended amount of connections for 1 IP ? I'm doing it only TumblrThis is the meaning of a HTTP 429 Error https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#4xx_Client_errors
So this error is just as it sounds, you are sending the website too many requests and you will need to either reduce the number of connections or use proxies so all the requests aren't coming from the same IP.