All our servers come equipped with a request limiter to limit incoming concurrent requests. If you hit this limiter you’re likely sending out too many requests from the same session ID, at the same time.
We’ve implemented this to ensure a stabler platform for your Bolts to run off. A lot of concurrent requests can severely degrade your Bolts performance, leading to longer loading times.
If you see this error and don’t know what to do, contact our Support at servebolt.com. They can help you find out what requests are causing this behaviour and what you can do to prevent it from happening.