# Debug node causing RangeError: Maximum call stack size exceeded

**URL:** <https://discourse.nodered.org/t/debug-node-causing-rangeerror-maximum-call-stack-size-exceeded/27776>\
**Category:** General\
**Created:** [4 June 2020 15:27 UTC](https://discourse.nodered.org/t/debug-node-causing-rangeerror-maximum-call-stack-size-exceeded/27776 "2020-06-04T15:27:54Z")\
**Posts on this page:** 1\
**Showing post:** 11

<div class="post-metadata">

**Author:** ![lenny1972](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/lenny1972/32/13210_2.png) [@lenny1972](https://discourse.nodered.org/u/lenny1972)\
**Post date:** [5 June 2020 05:31 UTC](https://discourse.nodered.org/t/debug-node-causing-rangeerror-maximum-call-stack-size-exceeded/27776/11 "2020-06-05T05:31:40Z")

</div>

> [@zenofmud](#):
>
> Can you upgrade? (I would suggest backing up your SD card before doing the upgrade.)

As per this post  
[https://discourse.nodered.org/t/mqtt-node-not-working-after-nr-update/22138](https://discourse.nodered.org/t/mqtt-node-not-working-after-nr-update/22138)  
some time ago I tried to update my NR installation but after updating I had an error with the MQTT client and had to switch back to v.0.20.07. Anyway - after solving this NR restart issue - I'll try to update NR again and see if everything will work as expected.

---

_[View the full topic](https://discourse.nodered.org/t/debug-node-causing-rangeerror-maximum-call-stack-size-exceeded/27776)._