# I cannot undertstand from where this error come!

**URL:** <https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243>\
**Category:** General\
**Created:** [27 November 2018 17:03 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243 "2018-11-27T17:03:34Z")\
**Posts on this page:** 12\
**Page:** 1

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**Author:** ![naamah75](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/naamah75/32/4060_2.png) [@naamah75](https://discourse.nodered.org/u/naamah75)\
**Post date:** [27 November 2018 17:03 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/1 "2018-11-27T17:03:34Z")

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I get this error on the debug even if I set current flow and I select a new blank page.

```
27/11/2018, 17:58:58e2beba7b.4ba748
msg : error
"Error: Pool is closed."

```

I cannot undertstand from where this error come!

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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:** [27 November 2018 17:13 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/2 "2018-11-27T17:13:30Z")

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It is coming from the node with id `e2beba7b.4ba748` - you can find it by selecting the 'Search Flows' option from the menu and enter that id in the search box.

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**Author:** ![naamah75](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/naamah75/32/4060_2.png) [@naamah75](https://discourse.nodered.org/u/naamah75)\
**Post date:** [27 November 2018 17:26 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/3 "2018-11-27T17:26:21Z")

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Unfortunately I get `No matches found` as answer.  
Tried to restart the server but nothing, the error is still here.

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**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:** [27 November 2018 17:39 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/4 "2018-11-27T17:39:22Z")

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It may be a mysql node if you are using mysql.

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<div class="post-metadata">

**Author:** ![naamah75](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/naamah75/32/4060_2.png) [@naamah75](https://discourse.nodered.org/u/naamah75)\
**Post date:** [27 November 2018 17:42 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/5 "2018-11-27T17:42:34Z")

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I supposed that, so I deleted the node, the entire flow and the mysql config also, but this annoying message don't want to disappear

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**Author:** ![cflurin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cflurin/32/29_2.png) [@cflurin](https://discourse.nodered.org/u/cflurin)\
**Post date:** [27 November 2018 17:44 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/6 "2018-11-27T17:44:37Z")

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@naamah75,

Are you using subflows?

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<div class="post-metadata">

**Author:** ![naamah75](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/naamah75/32/4060_2.png) [@naamah75](https://discourse.nodered.org/u/naamah75)\
**Post date:** [27 November 2018 18:06 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/7 "2018-11-27T18:06:08Z")

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Nope! I dont' use.

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<div class="post-metadata">

**Author:** ![zenofmud](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/zenofmud/32/316_2.png) [@zenofmud](https://discourse.nodered.org/u/zenofmud)\
**Post date:** [27 November 2018 18:30 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/8 "2018-11-27T18:30:08Z")

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Did you restart NR after deleting the node and flow?  
go to the sidebar and see if there is an unused configuratin node hanging around

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<div class="post-metadata">

**Author:** ![naamah75](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/naamah75/32/4060_2.png) [@naamah75](https://discourse.nodered.org/u/naamah75)\
**Post date:** [28 November 2018 07:18 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/9 "2018-11-28T07:18:24Z")

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Yes, restarted the entiere PC.  
I've some unused configuration, but nothing related to mysql, only two MQTT brokers.

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<div class="post-metadata">

**Author:** ![hotNipi](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/hotnipi/32/383_2.png) [@hotNipi](https://discourse.nodered.org/u/hotNipi)\
**Post date:** [28 November 2018 07:59 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/10 "2018-11-28T07:59:07Z")

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Is the id `e2beba7b.4ba748` still same after all you have done by now?  
You can also search in your flow.json to find if there is anything related to this id.

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<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:** [28 November 2018 08:22 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/11 "2018-11-28T08:22:48Z")

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> [@naamah75](#):
>
> Unfortunately I get `No matches found` as answer.

Are you sure you put the right id in? Make sure you do not include the end of the timestamp

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<div class="post-metadata">

**Author:** ![naamah75](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/naamah75/32/4060_2.png) [@naamah75](https://discourse.nodered.org/u/naamah75)\
**Post date:** [28 November 2018 10:35 UTC](https://discourse.nodered.org/t/i-cannot-undertstand-from-where-this-error-come/5243/12 "2018-11-28T10:35:18Z")

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Copied and pasted the ID in the search flow... so yes, I'm sure.  
Anyway, found the problem coming from a modbus node, deleted and recreated. Now it's okay.  
Maybe a remaining garbage from deleted flow?