# 400 client error when running in Jupyterlab on Xanadu website **URL:** \ **Category:** Borealis\ **Created:** [June 3, 2022, 5:08pm UTC](https://discuss.pennylane.ai/t/400-client-error-when-running-in-jupyterlab-on-xanadu-website/1953 "2022-06-03T17:08:14Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Samarth\_Sandeep](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/samarth_sandeep/32/650_2.png) [@Samarth\_Sandeep](https://discuss.pennylane.ai/u/Samarth_Sandeep)\ **Post date:** [June 3, 2022, 5:08pm UTC](https://discuss.pennylane.ai/t/400-client-error-when-running-in-jupyterlab-on-xanadu-website/1953/1 "2022-06-03T17:08:14Z")
Logging in via [https://pennylane.xanadu.ai/](https://pennylane.xanadu.ai/), I tried both the Borealis quickstart and the beginner Borealis tutorial. In both cases, I received a 400 client error at the point of running the circuit on the device. I tried again with another browser and another account, but still no luck. Any reason for this? ---
**Author:** ![CatalinaAlbornoz](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/catalinaalbornoz/32/1196_2.png) [@CatalinaAlbornoz](https://discuss.pennylane.ai/u/CatalinaAlbornoz)\ **Post date:** [June 3, 2022, 10:35pm UTC](https://discuss.pennylane.ai/t/400-client-error-when-running-in-jupyterlab-on-xanadu-website/1953/2 "2022-06-03T22:35:52Z")
Hi @Samarth_Sandeep, it’s possible that you were trying to use the Borealis device when it’s down for calibration (1-2pm ET M-F). If you could try from 2-4pm ET on Monday it would be useful to know if the problem persists. If it does, please post a picture of the problem here if you can. ---
**Author:** ![Samarth\_Sandeep](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/samarth_sandeep/32/650_2.png) [@Samarth\_Sandeep](https://discuss.pennylane.ai/u/Samarth_Sandeep)\ **Post date:** [June 9, 2022, 5:12pm UTC](https://discuss.pennylane.ai/t/400-client-error-when-running-in-jupyterlab-on-xanadu-website/1953/3 "2022-06-09T17:12:36Z")
Hi Catalina, Will give it a shot today, thanks! ---
**Author:** ![isaacdevlugt](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/isaacdevlugt/32/1159_2.png) [@isaacdevlugt](https://discuss.pennylane.ai/u/isaacdevlugt)\ **Post date:** [June 9, 2022, 7:45pm UTC](https://discuss.pennylane.ai/t/400-client-error-when-running-in-jupyterlab-on-xanadu-website/1953/4 "2022-06-09T19:45:16Z")
Hey @Samarth_Sandeep, just to compliment @CatalinaAlbornoz’s response, when you log into Xanadu Cloud, you should be brought to a “Quantum Devices” page where you can see the weekly availability of all of our devices. Borealis’ current availability is this: ![38%20PM](https://canada1.discourse-cdn.com/flex012/uploads/pennylane/original/2X/c/cb94eca5948b79d3392d21e33d6c63fafe789900.png) ---
**Author:** ![Samarth\_Sandeep](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/samarth_sandeep/32/650_2.png) [@Samarth\_Sandeep](https://discuss.pennylane.ai/u/Samarth_Sandeep)\ **Post date:** [June 10, 2022, 12:19am UTC](https://discuss.pennylane.ai/t/400-client-error-when-running-in-jupyterlab-on-xanadu-website/1953/5 "2022-06-10T00:19:38Z")
Hi Isaac and Catalina, Nice gui! Was definitely helpful to see the schedule like that. What is the shot limit for the Borealis? Thanks, Samarth ---
**Author:** ![CatalinaAlbornoz](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/catalinaalbornoz/32/1196_2.png) [@CatalinaAlbornoz](https://discuss.pennylane.ai/u/CatalinaAlbornoz)\ **Post date:** [June 13, 2022, 2:32pm UTC](https://discuss.pennylane.ai/t/400-client-error-when-running-in-jupyterlab-on-xanadu-website/1953/6 "2022-06-13T14:32:09Z")
Hi @Samarth_Sandeep, You have a maximum of 5 million shots. If you need more for a research project please let me know and we can evaluate your case to see if we can provide more. ---
**Author:** ![CatalinaAlbornoz](https://yyz2.discourse-cdn.com/flex012/user_avatar/discuss.pennylane.ai/catalinaalbornoz/32/1196_2.png) [@CatalinaAlbornoz](https://discuss.pennylane.ai/u/CatalinaAlbornoz)\ **Post date:** [June 13, 2022, 3:19pm UTC](https://discuss.pennylane.ai/t/400-client-error-when-running-in-jupyterlab-on-xanadu-website/1953/7 "2022-06-13T15:19:01Z")
Hi @Samarth_Sandeep! An important clarification: you have a maximum of 5 million shots in total but each program can only have a maximum of 1 million shots. If you use Braket you probably have more shots but you have to pay. Please let us know if you have any more questions!