# Error: lost connection to WS Server

**URL:** <https://discourse.nodered.org/t/error-lost-connection-to-ws-server/26985>\
**Category:** General\
**Created:** [20 May 2020 09:51 UTC](https://discourse.nodered.org/t/error-lost-connection-to-ws-server/26985 "2020-05-20T09:51:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![EugeneD](https://avatars.discourse-cdn.com/v4/letter/e/7ba0ec/32.png) [@EugeneD](https://discourse.nodered.org/u/EugeneD)\
**Post date:** [20 May 2020 09:51 UTC](https://discourse.nodered.org/t/error-lost-connection-to-ws-server/26985/1 "2020-05-20T09:51:26Z")

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Hello,

The backgroud is like this:

1. I need to use node-red with the hardware of revolution pi.
2. The original version of node-red on my revpi has no npm installed, so I upgrade the software, seems everything is ok after upgrade.
3. The original webserver has no revpi patelle existed, and also the palette manager is disabled, so I modified the "settings.js" to enable the "palette manager".
4. Now I can add revolution pi palettes, and I rebooted my revpi.
5. I put the revolution pi palette to my flow but it display "disconnected".
6. I checked the statu of nord-red in terminal, it displays "lost connection to WS server".

My appreciation if anybody can help me.

Best regards!

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [19 July 2020 09:58 UTC](https://discourse.nodered.org/t/error-lost-connection-to-ws-server/26985/2 "2020-07-19T09:58:57Z")

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