# Please help me understand this error

**URL:** <https://discourse.nodered.org/t/please-help-me-understand-this-error/71906>\
**Category:** General\
**Created:** [9 December 2022 08:12 UTC](https://discourse.nodered.org/t/please-help-me-understand-this-error/71906 "2022-12-09T08:12:41Z")\
**Posts on this page:** 8\
**Page:** 1

<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:** [9 December 2022 08:12 UTC](https://discourse.nodered.org/t/please-help-me-understand-this-error/71906/1 "2022-12-09T08:12:41Z")

</div>

I'll keep it brief:  
I'm getting this error and can't find the _person_ causing it.

```auto
{"topic":"ERROR_REPORT/TimePi/Telemetry","error":{"message":"ping: sendmsg: Network is unreachable\n Please check that your service provider or network device has IPv6 enabled","source":{"id":"ee4b67f69783569a","type":"ping","name":"BedPi","count":1}},"_msgid":"7f99d026c88be02b","settings":{"input":"2022-12-08T19:52:41.082Z","input_format":"","input_tz":"Australia/Sydney","output_format":"YYYY-MM-DD HH:mm:ss","output_locale":"en_AU","output_tz":"Australia/Sydney"},"time":"2022-12-09 06:52:41","payload":{"message":"ping: sendmsg: Network is unreachable\n Please check that your service provider or network device has IPv6 enabled","source":{"id":"ee4b67f69783569a","type":"ping","name":"BedPi","count":1}}}

```

Ok, other stuff to help you help me:  
I suspect this is from a REMOTE machine. `BedPi`.  
However: If I look on/in `BedPi`, there are no errors caught.  
Hang on I'll check. 😉  
Well, none detectable by my routines.  
I have a _routine_ that catches errors and constructs a message telling me from which machine and from which flow the error came.  
What has caught me is the `PING` nodes recently.  
If the network goes down they _spit their dummies_ and throw errors.  
Which is fair enough, so what I have since done is put separate `CATCH` nodes for them and the output is just ignored.  
The overwhelming `CATCH` node for the rest of the flow negates these nodes - correct?  
ARGH!  
Ok, I forgot to tick the _magic box_: `Ignore errors handled by other Catch nodes`  
Ok. My fault.  
But why aren't I given the correct/valid `node-id`?

---

<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:** [9 December 2022 08:21 UTC](https://discourse.nodered.org/t/please-help-me-understand-this-error/71906/2 "2022-12-09T08:21:26Z")

</div>

Are you viewing the complete message from the catch note? It should have a property in there that identifies the source.

---

<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:** [9 December 2022 08:29 UTC](https://discourse.nodered.org/t/please-help-me-understand-this-error/71906/3 "2022-12-09T08:29:31Z")

</div>

Alas no.

This is what my routine give me. ☹  
The thing is that because I didn't tick that _magic box_ the `ping` node is causing the error.  
That is kind of shown in the message I get.  
But (alas) there are a few of them on `BedPi` and when I go to the flow/s and look (before I ticked that box - which was done AFTER the error and my posting here now) none of my routines showed me any errors.

Not wanting to muddy the waters:  
This is the front end of the error capture routine I have.  
Given I have only included the important parts.  
And yes, I got the message I posted further down the line than I am showing.  
Which in itself is weird if none of the other routines (on each important TAB on `BedPi`) and handle their errors accordingly.

```auto
[{"id":"62be7566.4b4454","type":"subflow","name":"Error catch","info":"","category":"","in":[{"x":120,"y":250,"wires":[{"id":"1b99b8b4.ecf75f"}]}],"out":[{"x":1040,"y":280,"wires":[{"id":"a142130.032a0f","port":0}]},{"x":1040,"y":330,"wires":[{"id":"f632883f.7b7a28","port":0}]}],"env":[],"color":"#DD0000","outputLabels":["Error output","Overspeed alarm"],"icon":"node-red/alert.svg","status":{"x":1040,"y":390,"wires":[{"id":"101bf1bb.1f7d56","port":0}]}},{"id":"ab7353b2.d1b098","type":"msg-speed","z":"62be7566.4b4454","name":"Speed check","frequency":"sec","estimation":false,"ignore":false,"x":450,"y":330,"wires":[["c7fad2ac.ec77e"],[]]},{"id":"c7fad2ac.ec77e","type":"switch","z":"62be7566.4b4454","name":"> max_speed?","property":"payload","propertyType":"msg","rules":[{"t":"gt","v":"max_speed","vt":"global"}],"checkall":"true","repair":false,"outputs":1,"x":620,"y":330,"wires":[["f632883f.7b7a28"]]},{"id":"f632883f.7b7a28","type":"change","z":"62be7566.4b4454","name":"Stop","rules":[{"t":"set","p":"payload","pt":"msg","to":"stop","tot":"str"},{"t":"set","p":"topic","pt":"msg","to":"CONTROL","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":780,"y":330,"wires":[["a142130.032a0f","101bf1bb.1f7d56"]]},{"id":"a142130.032a0f","type":"gate","z":"62be7566.4b4454","name":"","controlTopic":"control","defaultState":"open","openCmd":"go","closeCmd":"stop","toggleCmd":"toggle","defaultCmd":"default","persist":false,"x":920,"y":280,"wires":[[]]},{"id":"45c23f97.247a68","type":"change","z":"62be7566.4b4454","name":"","rules":[{"t":"set","p":"payload","pt":"msg","to":"error","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":620,"y":280,"wires":[["d9bab478.78eb8"]]},{"id":"1b99b8b4.ecf75f","type":"switch","z":"62be7566.4b4454","name":"RESET?","property":"topic","propertyType":"msg","rules":[{"t":"eq","v":"RESET","vt":"str"},{"t":"neq","v":"RESET","vt":"str"}],"checkall":"true","repair":false,"outputs":2,"x":240,"y":250,"wires":[["7eb12133.460c6"],["ab7353b2.d1b098","30576976.5a4d76"]]},{"id":"7eb12133.460c6","type":"change","z":"62be7566.4b4454","name":"Go","rules":[{"t":"set","p":"payload","pt":"msg","to":"go","tot":"str"},{"t":"set","p":"topic","pt":"msg","to":"CONTROL","tot":"str"}],"action":"","property":"","from":"","to":"","reg":false,"x":430,"y":190,"wires":[["a142130.032a0f","101bf1bb.1f7d56"]]},{"id":"101bf1bb.1f7d56","type":"function","z":"62be7566.4b4454","name":"","func":"if (msg.payload == \"stop\")\n{\n msg.payload = ({fill: \"red\",text:\"Overspeed\"});\n}\nif (msg.payload == \"go\")\n{\n msg.payload = ({fill: \"green\",text:\"Good\"});\n}\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":930,"y":390,"wires":[[]]},{"id":"dc4e7681.85bec8","type":"moment","z":"62be7566.4b4454","name":"","topic":"","input":"payload","inputType":"msg","inTz":"Australia/Sydney","adjAmount":0,"adjType":"days","adjDir":"add","format":"YYYY-MM-DD HH:mm:ss","locale":"en_AU","output":"payload","outputType":"msg","outTz":"Australia/Sydney","x":745,"y":230,"wires":[["b6239445.5a3bb"]],"l":false},{"id":"b6239445.5a3bb","type":"change","z":"62be7566.4b4454","name":"Time","rules":[{"t":"move","p":"payload","pt":"msg","to":"time","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":920,"y":230,"wires":[["b8ab3ac7.6b4788"]]},{"id":"30576976.5a4d76","type":"change","z":"62be7566.4b4454","name":"Save","rules":[{"t":"set","p":"payload","pt":"flow","to":"payload","tot":"msg"}],"action":"","property":"","from":"","to":"","reg":false,"x":430,"y":230,"wires":[["372932c7.1c595e"]]},{"id":"b8ab3ac7.6b4788","type":"change","z":"62be7566.4b4454","name":"Get","rules":[{"t":"set","p":"payload","pt":"msg","to":"payload","tot":"flow"}],"action":"","property":"","from":"","to":"","reg":false,"x":430,"y":280,"wires":[["45c23f97.247a68"]]},{"id":"372932c7.1c595e","type":"change","z":"62be7566.4b4454","name":"TimeStamp","rules":[{"t":"set","p":"payload","pt":"msg","to":"","tot":"date"}],"action":"","property":"","from":"","to":"","reg":false,"x":610,"y":230,"wires":[["dc4e7681.85bec8"]]},{"id":"d9bab478.78eb8","type":"function","z":"62be7566.4b4454","name":"Get name/s","func":"//var flow_name = flow.get(\"$parent.name\");\n//return msg;\n\nvar device_name =global.get('myDeviceName');\nvar flow_name = flow.get(\"$parent.name\");\nmsg.topic =\"ERROR_REPORT/\" + device_name + \"/\" + flow_name;\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","x":745,"y":280,"wires":[["a142130.032a0f"]],"l":false},{"id":"b7bfd394.e9304","type":"catch","z":"6dd5ca4d.d1958c","g":"54cd03526a7a6b5f","name":"","scope":null,"uncaught":true,"x":3790,"y":240,"wires":[["3cc1ea85.13f0be"]]},{"id":"3cc1ea85.13f0be","type":"subflow:62be7566.4b4454","z":"6dd5ca4d.d1958c","g":"54cd03526a7a6b5f","name":"","env":[],"x":3980,"y":260,"wires":[["9490c8a1.a6b71","4af1c910.28e998"],["b705280d.f0b64"]]},{"id":"4af1c910.28e998","type":"q-gate","z":"6dd5ca4d.d1958c","g":"54cd03526a7a6b5f","name":"qgate","controlTopic":"CONTROL","defaultState":"queueing","openCmd":"Go","closeCmd":"Stop","toggleCmd":"toggle","queueCmd":"queue","defaultCmd":"default","triggerCmd":"trigger","flushCmd":"flush","resetCmd":"reset","peekCmd":"","dropCmd":"","statusCmd":"","maxQueueLength":"50","keepNewest":true,"qToggle":false,"persist":false,"x":3970,"y":330,"wires":[["756a44a5.58e4ec"]]},{"id":"be24ce9.d0520b","type":"inject","z":"6dd5ca4d.d1958c","g":"54cd03526a7a6b5f","name":"Next","props":[{"p":"payload"},{"p":"topic","vt":"str"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"CONTROL","payload":"trigger","payloadType":"str","x":3780,"y":330,"wires":[["4af1c910.28e998"]],"icon":"node-red/trigger.svg"},{"id":"756a44a5.58e4ec","type":"debug","z":"6dd5ca4d.d1958c","g":"54cd03526a7a6b5f","name":"RealWorldControl error list","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":4230,"y":330,"wires":[]}]

```

Sorry, it may be a _Dog's breakfast_ for anyone looking at it.  
It was written a long time ago, but has been improved from the original version.  
Given all the other stuff / things / variables are set like `device_name` etc.....  
For other errors I get the correct details.  
So I'm confused why this is failing as it does.  
I can generate an error and post if you want to show it does work.

---

<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:** [9 December 2022 08:33 UTC](https://discourse.nodered.org/t/please-help-me-understand-this-error/71906/4 "2022-12-09T08:33:36Z")

</div>

Ah, this is what I get if I generate an error from my test routine.

```auto
{"_msgid":"b235d1146721268d","topic":"ERROR_REPORT/BedPi/RealWorldControl","error":{"message":"ReferenceError: a is not defined (line 1, col 19)","source":{"id":"cd213560.943a7","type":"function","name":"This will throw an error","count":1}},"_error":{},"settings":{"input":"2022-12-09T08:30:48.055Z","input_format":"","input_tz":"Australia/Sydney","output_format":"YYYY-MM-DD HH:mm:ss","output_locale":"en_AU","output_tz":"Australia/Sydney"},"time":"2022-12-09 19:30:48","payload":{"message":"ReferenceError: a is not defined (line 1, col 19)","source":{"id":"cd213560.943a7","type":"function","name":"This will throw an error","count":1}},"_event":"node:2b6249a.ecd6cb6"}

```

you can see the `source-id` is valid.

---

<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:** [9 December 2022 08:42 UTC](https://discourse.nodered.org/t/please-help-me-understand-this-error/71906/5 "2022-12-09T08:42:53Z")

</div>

# FOUND IT!

(Sorry - but keeping you on the page wtih me)

It is a `ping` node. Not on `BedPi`. My mistake. `BedPi` is the **NAME** of the node.

This is the guy:

```auto
[{"id":"ee4b67f69783569a","type":"ping","z":"c636aa5a.cc34","protocol":"Automatic","mode":"triggered","name":"BedPi PING","host":"192.168.17.83","timer":"20","inputs":1,"x":365,"y":870,"wires":[["8ee1f5a6937fa88c"]],"l":false}]

```

So that caused the original error I posted.  
Can you please help me understand why/how the `node-id` got corrupted.

---

<div class="post-metadata">

**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [9 December 2022 09:32 UTC](https://discourse.nodered.org/t/please-help-me-understand-this-error/71906/6 "2022-12-09T09:32:48Z")

</div>

Can you make the symptom happen again? If so then, as always, add debug nodes and track through what is happening till you find the problem.

---

<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:** [9 December 2022 09:51 UTC](https://discourse.nodered.org/t/please-help-me-understand-this-error/71906/7 "2022-12-09T09:51:52Z")

</div>

I'll get around to it.  
It is just it kind of threw a spanner in the works for me while doing something.

I did a quick test on a different machine and the `node-id` is/was correct.  
So I shall have to look at that a bit more when I get a chance.  
Just now it is more an annoyance than urgent needing resolution.

I was asking if this is/was a known thing.  
But it seems the gremlins are back again.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [7 February 2023 09:52 UTC](https://discourse.nodered.org/t/please-help-me-understand-this-error/71906/8 "2023-02-07T09:52:19Z")

</div>

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