What does the "429 error" in the request response of Instabot mean?

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The "429 error" in the request response of Instabot means that the user has exceeded the rate limit set by Instagram. This error occurs when the user sends too many requests to the Instagram server in a short period of time, and Instagram blocks further requests to avoid server overload. To fix this error, the user should wait for some time before sending new requests or reduce the frequency of requests to avoid hitting the rate limit.