# Missing node types - SerialPort

**URL:** <https://discourse.nodered.org/t/missing-node-types-serialport/52133>\
**Category:** General\
**Created:** [12 October 2021 12:23 UTC](https://discourse.nodered.org/t/missing-node-types-serialport/52133 "2021-10-12T12:23:22Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![pagagaming](https://avatars.discourse-cdn.com/v4/letter/p/9de0a6/32.png) [@pagagaming](https://discourse.nodered.org/u/pagagaming)\
**Post date:** [12 October 2021 12:23 UTC](https://discourse.nodered.org/t/missing-node-types-serialport/52133/1 "2021-10-12T12:23:22Z")

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Hello everyone

i have a problem with my node red. everytime i want to deploy my flows it give me a warning of a missing node type ( missing serial port ).  
Does anybody knows how to fix this ? ![zNode red](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/d/1/d1145b903ee6f2601d82037d804e48d5d7558766.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:** [12 October 2021 12:56 UTC](https://discourse.nodered.org/t/missing-node-types-serialport/52133/2 "2021-10-12T12:56:43Z")

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Use CTRL+F search for serial. Delete unknown node. Deploy.

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**Author:** ![pagagaming](https://avatars.discourse-cdn.com/v4/letter/p/9de0a6/32.png) [@pagagaming](https://discourse.nodered.org/u/pagagaming)\
**Post date:** [12 October 2021 13:20 UTC](https://discourse.nodered.org/t/missing-node-types-serialport/52133/3 "2021-10-12T13:20:06Z")

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Hye, thanks for the fast reply.  
How can i delete it when i click it the window just closes  
this is what i see

 ![Error](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/6/d/6d1ba375d3c9f0dc9730b546e31f3b39ee228469.png)

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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:** [12 October 2021 13:55 UTC](https://discourse.nodered.org/t/missing-node-types-serialport/52133/4 "2021-10-12T13:55:38Z")

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That is the terminal window.

What do you see in the editor when you do as Steve has suggested?

Somewhere in your flows you have a serial node, but you don't have that node type installed. The node will be labelled "unknown" in the editor.

You have two choices. Either delete that node because you don't want to use the serial port, or use the palette manager in the editor to install the missing serial node.

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<div class="post-metadata">

**Author:** ![pagagaming](https://avatars.discourse-cdn.com/v4/letter/p/9de0a6/32.png) [@pagagaming](https://discourse.nodered.org/u/pagagaming)\
**Post date:** [16 November 2021 13:37 UTC](https://discourse.nodered.org/t/missing-node-types-serialport/52133/5 "2021-11-16T13:37:25Z")

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when i do your steps and search for the serial port i can click it but can't delete it, the window just closes

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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:** [15 January 2022 13:37 UTC](https://discourse.nodered.org/t/missing-node-types-serialport/52133/6 "2022-01-15T13:37:41Z")

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