# Need help! an error happpened, i cant deploy NR

**URL:** https://discourse.nodered.org/t/need-help-an-error-happpened-i-cant-deploy-nr/10003
**Category:** General
**Created:** [11 April 2019 02:07 UTC](https://discourse.nodered.org/t/need-help-an-error-happpened-i-cant-deploy-nr/10003 "2019-04-11T02:07:41Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![qgc007](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/qgc007/32/7362_2.png) [@qgc007](https://discourse.nodered.org/u/qgc007)
#### Post date: [11 April 2019 02:07 UTC](https://discourse.nodered.org/t/need-help-an-error-happpened-i-cant-deploy-nr/10003/1 "2019-04-11T02:07:41Z")

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![err](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/6/6b4e2b28706b1243aed77ab3bc97d3a7d8ea01d7.png)

The flow was stopped because an unknown node exists, postgresdb  
i delete all postgresql node\_modules ,but it didnt work

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### Author: ![qgc007](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/qgc007/32/7362_2.png) [@qgc007](https://discourse.nodered.org/u/qgc007)
#### Post date: [11 April 2019 05:39 UTC](https://discourse.nodered.org/t/need-help-an-error-happpened-i-cant-deploy-nr/10003/2 "2019-04-11T05:39:52Z")

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download postgresql node again