# Err Msg from Non existent node

**URL:** <https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970>\
**Category:** General\
**Created:** [9 December 2021 23:48 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970 "2021-12-09T23:48:38Z")\
**Posts on this page:** 17\
**Page:** 1

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**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [9 December 2021 23:48 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/1 "2021-12-09T23:48:38Z")

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I am getting an err msg in debug pane and I have not been able to find the node. I have grepped the flows.json file for the id '4ec33857e45da101' and nothing shows up. I suspect it is do to a broken link but was hoping some one had an idea on best way to track down the offending node.

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**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [9 December 2021 23:59 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/2 "2021-12-09T23:59:08Z")

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If you have `subflows`, they _mask_ (_hide_?) nodes.

And....

That doesn't look like a node id.

Node Id's look like this:  
`f9d73a87.6998e`

Note the `.` in the middle.

Copy the error message for all to see.

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**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [10 December 2021 00:32 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/3 "2021-12-10T00:32:29Z")

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I don't have any subflows. Here is the error msg

![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/d/b/db3e7eaea2507044c8279fd91954fd0326cda13b.png)

Node red log shows this and I believe they have to be related..

```auto
Radio[1].connect(10.0.0.238:4992)
Radio[1]._connectToRadio():
Radio[1].connection.on('error')
Radio[1].connection.on('close')
Radio[1]._stopRealtimeListener()

```

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<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [10 December 2021 00:35 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/4 "2021-12-10T00:35:18Z")

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Ok, that seems to be something to do with IP addresses.

Where do you think the node is shown?  
(Just use that picture again if you want and indicate)

Also, could you expand on _how_ you are seeing this? Is this message from a `debug` node?

Sorry, but I think a vital part of solving this puzzle is missing.

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<div class="post-metadata">

**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [10 December 2021 00:37 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/5 "2021-12-10T00:37:08Z")

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I don't have debug on but it is in the debug panel...  
 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/8/d/8dbd4dafc8003d931715eeb829f9f17a6f3739b5.png)

Short of disabling one flow at time is about the only way I can think of trying to narrow it down..

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**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [10 December 2021 00:39 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/6 "2021-12-10T00:39:51Z")

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Hmm....

Interesting.

So you are trying to connect to `10.0.0.238:4992`.

Ok, couple of questions:  
First: can you open a _shell_ / _terminal_ / _CLI_ and ping that IP address?  
Second.... Well, I'll wait for the reply.

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<div class="post-metadata">

**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [10 December 2021 00:41 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/7 "2021-12-10T00:41:01Z")

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No, the host is turned off at the moment. When I turn it on the error messages stop.

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**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [10 December 2021 00:43 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/8 "2021-12-10T00:43:06Z")

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Well... If that machine (`10.0.0.238`) is turned off and the error stops.....

That's a whole other problem to me.

Ok. The node (`TCP` at a guess)..... open it and down in the bottom left there is a `disable` button.  
Tick it and then close the node and `deploy`.  
Turn on this _other_ machine.

Let me know when that's done.  
BTW What O/S are you running?

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<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [10 December 2021 00:44 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/9 "2021-12-10T00:44:33Z")

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> [@Mick](#):
>
> No, the host is turned off at the moment. When I turn it on the error messages stop.

# !!!!

The errors STOP when you turn the host ON. Aw, c'mon!

Yeah, the host is turned on.... All good. If you turn the other machine off the errors happen....  
Kinda obvious why.

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<div class="post-metadata">

**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [10 December 2021 00:44 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/10 "2021-12-10T00:44:36Z")

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All flows are disabled. msg still pops up. This is running on a Pi.

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<div class="post-metadata">

**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [10 December 2021 00:46 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/11 "2021-12-10T00:46:47Z")

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So appreciate your obvious insights. The issue is it should not be sending the err msg with the flows disabled. I am just trying to figure out the source.

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<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [10 December 2021 00:49 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/12 "2021-12-10T00:49:33Z")

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Probably a `config` node.

A `TCP` node has the node and also a `config` node.  
You see the `TCP` one but not the `config` node. It is _hidden_.

On the top left you have buttons to see `debug`, `information`, `help` and so on.  
In there is a button that looks like a cog wheel  
Click that.

You will see the a list of config nodes.

BTW, what nodes are you using to talk to this machine? TCP, UDP, ......?

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<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [10 December 2021 00:54 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/13 "2021-12-10T00:54:31Z")

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Ok, sorry....

This is what I see when I open up that view on one of my machines.

 ![Screenshot from 2021-12-10 11-52-53](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/c/e/ceb79a891e04bc754d22fbe7ab59ce352e876024.png)

Look for any that have the IP address 10.0.0.238 below them.

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<div class="post-metadata">

**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [10 December 2021 00:58 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/14 "2021-12-10T00:58:13Z")

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I changed the node red log to trace. Hopefully it will give me more data. I have nodes that make restApi calls to a dotnet service on the pi. I suspect it may have something to do with that. I can see whats going on on any TCP / UDP nodes I have configured. . Interesting info in trace mode. There are plenty of nodes that don't use the xxx.xxx nomencature...

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/4/b/4b9cf672465a2bbabddeec62ccf64a821bd09ae4.png)

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<div class="post-metadata">

**Author:** ![Trying\_to\_learn](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/trying_to_learn/32/28400_2.png) [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Post date:** [10 December 2021 01:01 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/15 "2021-12-10T01:01:19Z")

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Well, it has suddenly gone above my skill set. Sorry.

All node names (AFAIK) are xxxxx.xxxxxx structure.  
With the `.` in the middle.

I really did want to help, but I shall admit: this has me confused.

Good luck.

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<div class="post-metadata">

**Author:** ![Mick](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/mick/32/80990_2.png) [@Mick](https://discourse.nodered.org/u/Mick)\
**Post date:** [10 December 2021 01:04 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/16 "2021-12-10T01:04:52Z")

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It's all good. After disabling the nodes / restarting them with trace on i have yet to see the errors. I shut the radio back off and am waiting to see if they start. Thanks for you help.  
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:** [8 February 2022 01:05 UTC](https://discourse.nodered.org/t/err-msg-from-non-existent-node/54970/17 "2022-02-08T01:05:17Z")

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