# Another 'Cannot GET /ui'

**URL:** <https://discourse.nodered.org/t/another-cannot-get-ui/96764>\
**Category:** General\
**Created:** [26 April 2025 09:53 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764 "2025-04-26T09:53:25Z")\
**Posts on this page:** 10\
**Page:** 1

<div class="post-metadata">

**Author:** ![slv07](https://avatars.discourse-cdn.com/v4/letter/s/ecc23a/32.png) [@slv07](https://discourse.nodered.org/u/slv07)\
**Post date:** [26 April 2025 09:53 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764/1 "2025-04-26T09:53:25Z")

</div>

I have very limited experience with RPi and Linux, and usually depend on others to create scripts or 'how to's ' on the web to get things up and running.

Firstly, let me describe what I'm dealing with:-

- RPi 3 (updated and fully upgraded a day or so ago),
- NPM version 10.9.2,
- Node-RED version v4.0.9,
- Node.js v23.11.0, Linux 6.12.20+rpt-rpi-v8 arm64 LE

Node-RED (version unrecorded) used to work on this RPi, along with the associated UI.  
Since the upgrade, Node-RED is working (sensor data coming from a WiFi sensor via MQTT broker is being received and showing in the relevant debug nodes).  
Incidentally, the first thing I did when I got Node-RED working this time, I imported a saved flow from the previous incarnation, but most if not all of the nodes were not known, and I could not deploy. I deleted all of the unknown nodes and flows and created a new flow and was able to deploy successfully (with the result described above).  
But ..... I cannot display the ui (as I did previously) - I get the venerable "Cannot GET /ui'.  
Is someone able to guide me through a troubleshooting session? (its disappointing the response 'Cannot GET /ui' doesn't include any supporting information like why?  
If in the end I have to 'rebuild' Node-RED, can this be done without affecting other applications/programs?  
Thank you in anticipation of some help.  
Cheers, Steve from Oz

---

<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:** [26 April 2025 10:20 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764/2 "2025-04-26T10:20:18Z")

</div>

Welcome to the forum.

> [@slv07](#):
>
> Node.js v23.11.0,

That is not a supported version of node.js, though that is probably not this specific problem.

> [@slv07](#):
>
> If in the end I have to 'rebuild' Node-RED, can this be done without affecting other applications/programs?

If you want to do that then I suggest running the[recommended node-red install script](https://nodered.org/docs/getting-started/raspberrypi), adding the parameter `--node20` on the end which fill downgrade you to a supported nodejs version.

If you want to try and get what you have running then show us what you see when you start node-red in a command window.

---

<div class="post-metadata">

**Author:** ![jbudd](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Post date:** [26 April 2025 10:29 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764/3 "2025-04-26T10:29:37Z")

</div>

> [@slv07](#):
>
> I imported a saved flow from the previous incarnation, but most if not all of the nodes were not known, and I could not deploy. I deleted all of the unknown nodes and flows and created a new flow and was able to deploy successfully

If you import a flow and it shows unknown nodes, those nodes are not installed.  
The dashboard (node-red-dashboard) is not a core component of Node-red, you have to install it via the hamburger menu | Manage Palette.

Starting with a fresh installation might be a good time to consider switching to an alternative dashboard since node-red-dashboard is deprecated.  
Available alternatives are Uibuilder and @flowfuse/node-red-dashboard.  
Unfortunately it's not a pain free transition.

---

<div class="post-metadata">

**Author:** ![slv07](https://avatars.discourse-cdn.com/v4/letter/s/ecc23a/32.png) [@slv07](https://discourse.nodered.org/u/slv07)\
**Post date:** [26 April 2025 10:50 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764/4 "2025-04-26T10:50:27Z")

</div>

Hi, Thanks for your input.  
When I read your post and saw one of the recommendations was '@flowfuse/node-red-dashboard' I thought 'I recognise that!' and checked my current Node-RED and I indeed have that installed. I wonder if it could be a part of the problem??

In the mean time, I'll use Colins recommendation and do the install with --node20 and see what happens.

Cheers

---

<div class="post-metadata">

**Author:** ![jbudd](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Post date:** [26 April 2025 10:56 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764/6 "2025-04-26T10:56:47Z")

</div>

The flowfuse dashboard is at :1880/dashboard not 1880:/ui

You can have both node-red-dashboard and @flowfuse/node-red-dashboard installed without any ill effects. Uibuilder too I believe.

I hesitate to call @flowfuse/node-red-dashboard a recommendation! 🙃

---

<div class="post-metadata">

**Author:** ![slv07](https://avatars.discourse-cdn.com/v4/letter/s/ecc23a/32.png) [@slv07](https://discourse.nodered.org/u/slv07)\
**Post date:** [26 April 2025 11:11 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764/7 "2025-04-26T11:11:03Z")

</div>

Hi,  
Well, I tried :1880/dashboard, and I could see the output of the sensors doing their thing. Looks like I'll have to study how to make the screen look like it was in the /ui (originally).  
Where can I find any doco on the @flowfuse/node-red-dashboard?  
Once again, thank you for such a valuable and quick support.  
Cheers

---

<div class="post-metadata">

**Author:** ![slv07](https://avatars.discourse-cdn.com/v4/letter/s/ecc23a/32.png) [@slv07](https://discourse.nodered.org/u/slv07)\
**Post date:** [26 April 2025 11:19 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764/8 "2025-04-26T11:19:05Z")

</div>

Hi, Sorry, I was so excited to get the dashboard working, I should have paid more attention and realise the @flowfuse/node-red-dashboard was in fact Node-RED Dashboard v2.0 !! And I know when to find all of the relevant details. So, I'm in for a long night!!!

PS, am I able to recover the nodes/flows that were save in the previous dashboard??  
Cheers

---

<div class="post-metadata">

**Author:** ![jbudd](https://avatars.discourse-cdn.com/v4/letter/j/5f8ce5/32.png) [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Post date:** [26 April 2025 11:22 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764/9 "2025-04-26T11:22:50Z")

</div>

If you import a flow and get "unknown nodes", just use Manage Palette to install the missing components. Nothing should be lost. Edit: - except you will have to re-enter any saved credentials.

---

<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:** [26 April 2025 11:34 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764/10 "2025-04-26T11:34:11Z")

</div>

> [@slv07](#):
>
> Where can I find any doco on the @flowfuse/node-red-dashboard?

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/b/8/b8119aaf7783ea0ac20d284f9d481378b3882515.png)

> **[Node-RED Dashboard 2.0](https://dashboard.flowfuse.com/)**
>
> Discover the features and benefits of Node-RED Dashboard 2.0, designed to streamline and enhance your Node-RED experience.

---

<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:** [25 July 2025 11:34 UTC](https://discourse.nodered.org/t/another-cannot-get-ui/96764/11 "2025-07-25T11:34:37Z")

</div>

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.