# Running 7.15 yarn kbn bootstrap got error: The Cypress App could not be downloaded
**URL:** https://discuss.elastic.co/t/running-7-15-yarn-kbn-bootstrap-got-error-the-cypress-app-could-not-be-downloaded/287553
**Category:** Kibana
**Tags:** kibana-plugin-development
**Created:** [October 25, 2021, 8:19am UTC](https://discuss.elastic.co/t/running-7-15-yarn-kbn-bootstrap-got-error-the-cypress-app-could-not-be-downloaded/287553 "2021-10-25T08:19:19Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@qinzehua](https://discuss.elastic.co/u/qinzehua)
#### Post date: [October 25, 2021, 8:19am UTC](https://discuss.elastic.co/t/running-7-15-yarn-kbn-bootstrap-got-error-the-cypress-app-could-not-be-downloaded/287553/1 "2021-10-25T08:19:19Z")
my branch is at 7.15, when i run `yarn kbn bootstrap` got error: `Does your workplace require a proxy to be used to access the Internet? If so, you must configure the HTTP_PROXY environment variable before downloading Cypress. Read more: https://on.cypress.io/proxy-configuration`.
But when i run `npm i cypress -D` in a demo project, it was no problem.
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### Author:  [@bhavyarm](https://discuss.elastic.co/u/bhavyarm)
#### Post date: [October 25, 2021, 10:32pm UTC](https://discuss.elastic.co/t/running-7-15-yarn-kbn-bootstrap-got-error-the-cypress-app-could-not-be-downloaded/287553/2 "2021-10-25T22:32:32Z")
This is strange. Can you please do yarn kbn clean && yarn kbn bootstrap and see if it clears the error?
Thanks
Bhavya
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### Author:  [@qinzehua](https://discuss.elastic.co/u/qinzehua)
#### Post date: [October 26, 2021, 1:47am UTC](https://discuss.elastic.co/t/running-7-15-yarn-kbn-bootstrap-got-error-the-cypress-app-could-not-be-downloaded/287553/3 "2021-10-26T01:47:51Z")
@bhavyarm Thank you for reply. I have do yarn kbn clean && yarn cache clean && yarn kbn bootstrap, have the same problem.
my environment is: windows 10, node 14.17.6, npm 6.14.15, yarn 1.22.17
And on my virtual machine centos-7.9 it was normal to run branch 7.15.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 23, 2021, 1:48am UTC](https://discuss.elastic.co/t/running-7-15-yarn-kbn-bootstrap-got-error-the-cypress-app-could-not-be-downloaded/287553/4 "2021-11-23T01:48:44Z")
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