# Suddenly lost connection to server

**URL:** <https://discourse.nodered.org/t/suddenly-lost-connection-to-server/22826>\
**Category:** General\
**Created:** [9 March 2020 03:55 UTC](https://discourse.nodered.org/t/suddenly-lost-connection-to-server/22826 "2020-03-09T03:55:05Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ncsalb](https://avatars.discourse-cdn.com/v4/letter/n/f17d59/32.png) [@ncsalb](https://discourse.nodered.org/u/ncsalb)\
**Post date:** [9 March 2020 03:55 UTC](https://discourse.nodered.org/t/suddenly-lost-connection-to-server/22826/1 "2020-03-09T03:55:05Z")

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Good Day! Can someone explain what happened to my node-red? The last time I used node-red the flow still works then now it suddenly lost connection.

Thank you so much!

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/9/f/9ff3222a4a1ffbcf7ac13df4b1647d6993c577c7.png)  
 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/f/c/fc6c179eaee793c32e8897f883d6f007fcd12199.png)

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**Author:** ![kuema](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/kuema/32/6542_2.png) [@kuema](https://discourse.nodered.org/u/kuema)\
**Post date:** [9 March 2020 06:01 UTC](https://discourse.nodered.org/t/suddenly-lost-connection-to-server/22826/2 "2020-03-09T06:01:19Z")

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Your Node-RED runtime crashed due to an uncaught exception in the OPC-UA node.

Errors should be properly handled by the node, so you should probably open an issue on their Github page.

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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:** [8 May 2020 06:01 UTC](https://discourse.nodered.org/t/suddenly-lost-connection-to-server/22826/3 "2020-05-08T06:01:21Z")

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