# Crash when editing MQTT node

**URL:** <https://forums.losant.com/t/crash-when-editing-mqtt-node/5031>\
**Category:** Bug Report\
**Tags:** mqtt, workflow\
**Created:** [April 21, 2023, 7:37pm UTC](https://forums.losant.com/t/crash-when-editing-mqtt-node/5031 "2023-04-21T19:37:59Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![Stephen\_Earthy](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@Stephen\_Earthy](https://forums.losant.com/u/Stephen_Earthy)\
**Post date:** [April 21, 2023, 7:37pm UTC](https://forums.losant.com/t/crash-when-editing-mqtt-node/5031/1 "2023-04-21T19:37:59Z")

</div>

I have been trying to make a simple workflow to send a command to a device, and every time I try to edit the MQTT node, I receive this error:

![image](https://us1.discourse-cdn.com/flex015/uploads/getstructure/original/2X/2/20baf0d5091682cddcdc2f9c7cccc9dffb26ffc6.png)

I have started over, with a fresh empty workflow, and using fresh nodes (not cut and paste), and it lets me edit the MQTT node only if its the first node I click on when first opening the workflow. Once I have edited, or even just clicked on another node, it crashes.

---

<div class="post-metadata">

**Author:** ![Stephen\_Earthy](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@Stephen\_Earthy](https://forums.losant.com/u/Stephen_Earthy)\
**Post date:** [April 21, 2023, 7:53pm UTC](https://forums.losant.com/t/crash-when-editing-mqtt-node/5031/2 "2023-04-21T19:53:03Z")

</div>

UPDATE - seems to happen with both the MQTT nodes (state/command). Restarted the application and is still happening.

---

<div class="post-metadata">

**Author:** ![Dylan\_Schuster](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.losant.com/dylan_schuster/32/2850_2.png) [@Dylan\_Schuster](https://forums.losant.com/u/Dylan_Schuster)\
**Post date:** [April 21, 2023, 7:53pm UTC](https://forums.losant.com/t/crash-when-editing-mqtt-node/5031/3 "2023-04-21T19:53:29Z")

</div>

Thanks, we’re looking into this now and hope to have a fix out shortly.

---

<div class="post-metadata">

**Author:** ![Dylan\_Schuster](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.losant.com/dylan_schuster/32/2850_2.png) [@Dylan\_Schuster](https://forums.losant.com/u/Dylan_Schuster)\
**Post date:** [April 21, 2023, 8:07pm UTC](https://forums.losant.com/t/crash-when-editing-mqtt-node/5031/4 "2023-04-21T20:07:57Z")

</div>

We’re still trying to reproduce this error and haven’t been able to do so yet. To clarify, which node(s) are we talking about?

- Device: State Node (output)
- Device: Command Node (output)
- MQTT Node (output)
- MQTT Trigger
- Something else?

---

<div class="post-metadata">

**Author:** ![Stephen\_Earthy](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@Stephen\_Earthy](https://forums.losant.com/u/Stephen_Earthy)\
**Post date:** [April 21, 2023, 8:13pm UTC](https://forums.losant.com/t/crash-when-editing-mqtt-node/5031/5 "2023-04-21T20:13:16Z")

</div>

Both of these:

- MQTT Node (output)
- MQTT Trigger

It seems to happen in any workflow I have one of those nodes in (not one specific workflow).  
I have exited Chrome, logged out/in, and continues to happen, sometimes not right away, but eventually errors.

---

<div class="post-metadata">

**Author:** ![Dylan\_Schuster](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.losant.com/dylan_schuster/32/2850_2.png) [@Dylan\_Schuster](https://forums.losant.com/u/Dylan_Schuster)\
**Post date:** [April 21, 2023, 10:36pm UTC](https://forums.losant.com/t/crash-when-editing-mqtt-node/5031/6 "2023-04-21T22:36:10Z")

</div>

@Stephen_Earthy We’ve pushed out a fix for the issue; please refresh the Losant browser tab to refresh it. If you come across the issue again please let us know.

Thanks for the bug report and the additional information; it definitely helped us get to the root of the problem.

---

<div class="post-metadata">

**Author:** ![Stephen\_Earthy](https://avatars.discourse-cdn.com/v4/letter/s/9e8a1a/32.png) [@Stephen\_Earthy](https://forums.losant.com/u/Stephen_Earthy)\
**Post date:** [April 21, 2023, 10:47pm UTC](https://forums.losant.com/t/crash-when-editing-mqtt-node/5031/7 "2023-04-21T22:47:29Z")

</div>

Excellent! Thanks for letting me know.

Stephen

![image001.jpg](https://us1.discourse-cdn.com/flex015/uploads/getstructure/original/2X/e/e72189fad5d77ce179119182981514dcd7457911.jpeg)
