# Node red suddenly CONNECTION\_REFUSED

**URL:** <https://discourse.nodered.org/t/node-red-suddenly-connection-refused/59478>\
**Category:** General\
**Created:** [7 March 2022 09:40 UTC](https://discourse.nodered.org/t/node-red-suddenly-connection-refused/59478 "2022-03-07T09:40:31Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![LaojiuLi](https://avatars.discourse-cdn.com/v4/letter/l/a6a055/32.png) [@LaojiuLi](https://discourse.nodered.org/u/LaojiuLi)\
**Post date:** [7 March 2022 09:40 UTC](https://discourse.nodered.org/t/node-red-suddenly-connection-refused/59478/1 "2022-03-07T09:40:32Z")

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The opening environment in CMD is normal

 ![jietu](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/e/7/e71d4f11a3a00ef62915c7bbb16931108baca289.png)

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**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [7 March 2022 09:45 UTC](https://discourse.nodered.org/t/node-red-suddenly-connection-refused/59478/2 "2022-03-07T09:45:26Z")

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Node-red has been crashed by the contrib node Node-red-contrib-qcloud-iotexplorer

This is due to poor error handling in the contrib node. You should report this on the GitHub repository.

Ps, by the looks of it, that node is just MQTT Pub/Sub - you can do this with standard MQTT built in nodes.

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<div class="post-metadata">

**Author:** ![LaojiuLi](https://avatars.discourse-cdn.com/v4/letter/l/a6a055/32.png) [@LaojiuLi](https://discourse.nodered.org/u/LaojiuLi)\
**Post date:** [7 March 2022 09:47 UTC](https://discourse.nodered.org/t/node-red-suddenly-connection-refused/59478/3 "2022-03-07T09:47:22Z")

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But now I can't enter and modify it

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<div class="post-metadata">

**Author:** ![Steve-Mcl](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/steve-mcl/32/4826_2.png) [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)\
**Post date:** [7 March 2022 09:59 UTC](https://discourse.nodered.org/t/node-red-suddenly-connection-refused/59478/4 "2022-03-07T09:59:30Z")

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Start node-red in safe mode

```bash
node-red --safe

```

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<div class="post-metadata">

**Author:** ![LaojiuLi](https://avatars.discourse-cdn.com/v4/letter/l/a6a055/32.png) [@LaojiuLi](https://discourse.nodered.org/u/LaojiuLi)\
**Post date:** [7 March 2022 10:09 UTC](https://discourse.nodered.org/t/node-red-suddenly-connection-refused/59478/5 "2022-03-07T10:09:55Z")

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Thank you for your help. I went in and modified it. Now I can enter it normally

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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:** [21 March 2022 10:10 UTC](https://discourse.nodered.org/t/node-red-suddenly-connection-refused/59478/6 "2022-03-21T10:10:48Z")

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