# Flows stopped due to missing node types. (mqttssl-broker)

**URL:** <https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437>\
**Category:** General\
**Created:** [29 May 2021 04:56 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437 "2021-05-29T04:56:00Z")\
**Posts on this page:** 10\
**Page:** 1

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**Author:** ![Vincent](https://avatars.discourse-cdn.com/v4/letter/v/e9bcb4/32.png) [@Vincent](https://discourse.nodered.org/u/Vincent)\
**Post date:** [29 May 2021 04:56 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437/1 "2021-05-29T04:56:01Z")

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Hi, can I know the steps in removing the unknown missing node in node-RED.

Flows stopped due to missing node types.

- mqttssl-broker

I have tried removing this node from the 'manage palette' \> 'node'  
but the console window tells me it was an error.

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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:** [29 May 2021 05:41 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437/2 "2021-05-29T05:41:05Z")

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Have you restarted node-red and refreshed the browser?

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**Author:** ![Vincent](https://avatars.discourse-cdn.com/v4/letter/v/e9bcb4/32.png) [@Vincent](https://discourse.nodered.org/u/Vincent)\
**Post date:** [29 May 2021 06:12 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437/3 "2021-05-29T06:12:45Z")

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you mean stop the node-red in background and start it over again thru cmd right

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**Author:** ![Vincent](https://avatars.discourse-cdn.com/v4/letter/v/e9bcb4/32.png) [@Vincent](https://discourse.nodered.org/u/Vincent)\
**Post date:** [29 May 2021 06:36 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437/4 "2021-05-29T06:36:13Z")

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![1](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/f/0/f0eb8c112e48c13d48db37f5fd7158e8072cccd7.jpeg)  
This is what I found on the command window when removing the node in node-RED. It stops there. Can I know how to solve this problem. Thank you

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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:** [29 May 2021 06:48 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437/5 "2021-05-29T06:48:53Z")

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Start node-red in safe mode. Once it is running, refresh the browser, use ctrl + f to search for mqttssl. Delete anything you find then deploy.

To start node-red in safe mode, enter `node-red --safe`

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**Author:** ![Vincent](https://avatars.discourse-cdn.com/v4/letter/v/e9bcb4/32.png) [@Vincent](https://discourse.nodered.org/u/Vincent)\
**Post date:** [29 May 2021 07:12 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437/6 "2021-05-29T07:12:59Z")

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![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/3/8/38000ebaed522e6959e8e249163daf8b8febf5cb.png)  
Yes, I have followed ur steps in removing it and restarting node-red in safe mode. However, the alert still popping up when I deploy my other nodes.  
Is that I have to uninstall the whole node js and reinstalling.

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**Author:** ![knolleary](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/knolleary/32/3_2.png) [@knolleary](https://discourse.nodered.org/u/knolleary)\
**Post date:** [29 May 2021 07:21 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437/7 "2021-05-29T07:21:57Z")

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If you have uninstalled the node module, you also need to remove the node from your flows.

That looks like a config node, so open up the Configuration nodes sidebar, look for any listed as Unknown, dbl click on it and click delete.

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<div class="post-metadata">

**Author:** ![Vincent](https://avatars.discourse-cdn.com/v4/letter/v/e9bcb4/32.png) [@Vincent](https://discourse.nodered.org/u/Vincent)\
**Post date:** [29 May 2021 07:36 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437/8 "2021-05-29T07:36:19Z")

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Thanks @knolleary@Steve-Mcl , I have solved the problem. Need to delete the node at the side bar of the configuration after removing all the unknown node in the 'manage palette'. Many thanks

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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:** [29 May 2021 10:20 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437/9 "2021-05-29T10:20:04Z")

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Vincent, for future, as I mentioned, ctrl+f would have found it for you. Glad you're sorted.

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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:** [28 July 2021 10:20 UTC](https://discourse.nodered.org/t/flows-stopped-due-to-missing-node-types-mqttssl-broker/46437/10 "2021-07-28T10:20:49Z")

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