# Notification.warnings.undefined?

**URL:** <https://discourse.nodered.org/t/notification-warnings-undefined/80556>\
**Category:** General\
**Created:** [14 August 2023 09:13 UTC](https://discourse.nodered.org/t/notification-warnings-undefined/80556 "2023-08-14T09:13:02Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![gNeandr](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/gneandr/32/73947_2.png) [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Post date:** [14 August 2023 09:13 UTC](https://discourse.nodered.org/t/notification-warnings-undefined/80556/1 "2023-08-14T09:13:02Z")

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After two weeks returning to my NR installation it just gives `notification.warnings.undefined`  
On the debug panel I get:

```auto
14.8.2023, 11:09:19
msg : error
"TypeError: Cannot read properties of null (reading 'rev')"

```

After removing all flows the notification.warnings.undefined still persists!  
Any help for this?  
The installation is on a RPI and was working without problems before.

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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:** [14 August 2023 09:16 UTC](https://discourse.nodered.org/t/notification-warnings-undefined/80556/2 "2023-08-14T09:16:07Z")

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> [@gNeandr](#):
>
> After removing all flows the notification.warnings.undefined still persists!

What version of Node-RED and Node JS are you running?

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<div class="post-metadata">

**Author:** ![gNeandr](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/gneandr/32/73947_2.png) [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Post date:** [14 August 2023 09:22 UTC](https://discourse.nodered.org/t/notification-warnings-undefined/80556/3 "2023-08-14T09:22:13Z")

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14 Aug 11:21:15 - [info] Node-RED Version: v3.0.2  
14 Aug 11:21:15 - [info] Node.js Version: v16.19.1

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**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:** [14 August 2023 09:22 UTC](https://discourse.nodered.org/t/notification-warnings-undefined/80556/4 "2023-08-14T09:22:36Z")

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Try this: In the editor, go to the sidebar -\> Context Data and see if there are any unused items. If so delete them and do a deploy.

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<div class="post-metadata">

**Author:** ![gNeandr](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/gneandr/32/73947_2.png) [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Post date:** [14 August 2023 09:30 UTC](https://discourse.nodered.org/t/notification-warnings-undefined/80556/5 "2023-08-14T09:30:50Z")

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Did it, found two of them, but problem not solved. Deploy gives:  
 ![Bildschirmfoto_2023-08-14_11-28-34](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/b/6/b6f43b64fc8294eaf8cd181beb384df89bd01c08.png)

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**Author:** ![gNeandr](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/gneandr/32/73947_2.png) [@gNeandr](https://discourse.nodered.org/u/gNeandr)\
**Post date:** [14 August 2023 09:37 UTC](https://discourse.nodered.org/t/notification-warnings-undefined/80556/6 "2023-08-14T09:37:15Z")

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Seems there is a problem with the storage  
`ENOSPC: no space left on device, copyfile ....`

So, back to the roots 🫢

See you later, thanks ...

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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:** [13 October 2023 09:37 UTC](https://discourse.nodered.org/t/notification-warnings-undefined/80556/7 "2023-10-13T09:37:40Z")

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