# UI not showing when I enter URL

**URL:** <https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810>\
**Category:** Dashboard\
**Created:** [13 November 2023 00:48 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810 "2023-11-13T00:48:00Z")\
**Posts on this page:** 17\
**Page:** 1

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**Author:** ![arniepodo](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@arniepodo](https://discourse.nodered.org/u/arniepodo)\
**Post date:** [13 November 2023 00:48 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/1 "2023-11-13T00:48:00Z")

</div>

I have Node red v3.1 installed on my Rpi. I have a flow that deploys successfully. However, when I try to access the ui via 192.168.x.x:1880/ui, nothing shows up. Just a blank webpage and the tab at the top of the browser says "undefined"  
Can anyone help this relatively noobie?  
Thanks!

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<div class="post-metadata">

**Author:** ![smanjunath211](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/smanjunath211/32/95742_2.png) [@smanjunath211](https://discourse.nodered.org/u/smanjunath211)\
**Post date:** [13 November 2023 01:06 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/2 "2023-11-13T01:06:04Z")

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is it possible to share your flow ?  
what dashboard nodes have you used in your flow ?

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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:** [13 November 2023 07:49 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/3 "2023-11-13T07:49:34Z")

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Welcome to the forum @arniepodo

Tell us what hardware and OS you are running on please.

Also please stop node red and start it again in a command window, then copy/paste here the full output from the command window. Copy/paste please not screen shot.

What browser are you using and can you try a different one?

Also open the browser developer tools and refresh the page and see if any errors are shown.

Please try and answer all the questions.

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**Author:** ![arniepodo](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@arniepodo](https://discourse.nodered.org/u/arniepodo)\
**Post date:** [13 November 2023 13:45 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/4 "2023-11-13T13:45:30Z")

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I am running Raspberry Pi OS on a raspberry pi. I did try this on both chrome and microsoft edge with the same result.  
Here is the command window output on node red startup:

"Start Node-RED

Once Node-RED has started, point a browser at [http://192.168.2.114:1880](http://192.168.2.114:1880)  
On Pi Node-RED works better with the Firefox or Chrome browser

Use node-red-stop to stop Node-RED  
Use node-red-start to start Node-RED again  
Use node-red-log to view the recent log output  
Use sudo systemctl enable nodered.service to autostart Node-RED at every boot  
Use sudo systemctl disable nodered.service to disable autostart on boot

To find more nodes and example flows - go to [http://flows.nodered.org](http://flows.nodered.org)

# Starting as a systemd service. 13 Nov 08:37:23 - [info] Welcome to Node-RED

13 Nov 08:37:23 - [info] Node-RED version: v3.1.0  
13 Nov 08:37:23 - [info] Node.js version: v18.18.2  
13 Nov 08:37:23 - [info] Linux 6.1.21-v7+ arm LE  
13 Nov 08:37:26 - [info] Loading palette nodes  
13 Nov 08:37:31 - [info] UI started at /ui  
13 Nov 08:37:32 - [info] Worldmap version 4.3.3  
13 Nov 08:37:32 - [info] Dashboard version 3.6.1 started at /ui

I tried to post the whole output but the forum threw an error message:  
"An error occurred: Sorry, new users can only put 2 links in a post."

Thank you and I hope you or anyone can help me solve this problem. I note that the flows were created using Node Red v2.2.2 a while ago.

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<div class="post-metadata">

**Author:** ![arniepodo](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@arniepodo](https://discourse.nodered.org/u/arniepodo)\
**Post date:** [13 November 2023 13:48 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/5 "2023-11-13T13:48:01Z")

</div>

Here is more of the command window output, beginning where my previous post left off:

13 Nov 08:37:34 - [warn] ------------------------------------------------------  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_button] 'ui\_button' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_switch] 'ui\_switch' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_slider] 'ui\_slider' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_numeric] 'ui\_numeric' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_text\_input] 'ui\_text\_input' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_text] 'ui\_text' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_gauge] 'ui\_gauge' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_chart] 'ui\_chart' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_toast] 'ui\_toast' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_template] 'ui\_template' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_link] 'ui\_link' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_tab] 'ui\_tab' already registered by module node-red-contrib-ui\_j  
13 Nov 08:37:34 - [warn] ------------------------------------------------------  
More to come....

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<div class="post-metadata">

**Author:** ![arniepodo](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@arniepodo](https://discourse.nodered.org/u/arniepodo)\
**Post date:** [13 November 2023 13:49 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/6 "2023-11-13T13:49:33Z")

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Here is the rest of the command window output:

13 Nov 08:37:34 - [warn] ------------------------------------------------------  
13 Nov 08:37:34 - [info] Settings file : /home/pi/.node-red/settings.js  
13 Nov 08:37:34 - [info] Context store : 'default' [module=memory]  
13 Nov 08:37:34 - [info] User directory : /home/pi/.node-red  
13 Nov 08:37:34 - [warn] Projects disabled : editorTheme.projects.enabled=false  
13 Nov 08:37:34 - [info] Flows file : /home/pi/.node-red/flows.json  
13 Nov 08:37:34 - [warn] Using unencrypted credentials  
13 Nov 08:37:35 - [info] Server now running at [http://127.0.0.1:1951/](http://127.0.0.1:1951/)  
13 Nov 08:37:35 - [info] Starting flows  
13 Nov 08:37:38 - [info] [tcp in:2c43dea5223df690] connecting to 192.168.2.118:9 130  
13 Nov 08:37:38 - [info] [tcp out:de7ba34d066a9024] connecting to 192.168.2.118: 9130  
13 Nov 08:37:38 - [info] [tcp out:TCP to radio on COM18] connecting to 192.168.2 .118:9130  
13 Nov 08:37:38 - [info] Started flows  
13 Nov 08:37:38 - [error] [serialconfig:e8e5b26dca4edc29] serial port /dev/seria l/by-path/platform-3f980000.usb-usb-0:1.1:1.0-port0 error: Error: Error: No such file or directory, cannot open /dev/serial/by-path/platform-3f980000.usb-usb-0: 1.1:1.0-port0  
13 Nov 08:37:38 - [error] [serialconfig:af33e31c.bca5e] serial port /dev/serial/ by-path/platform-3f980000.usb-usb-0:1.2:1.0-port0 error: Error: Error: No such f ile or directory, cannot open /dev/serial/by-path/platform-3f980000.usb-usb-0:1. 2:1.0-port0  
13 Nov 08:37:38 - [info] [tcp in:2c43dea5223df690] connected to 192.168.2.118:91 30  
13 Nov 08:37:38 - [info] [tcp out:de7ba34d066a9024] connected to 192.168.2.118:9 130  
13 Nov 08:37:38 - [info] [tcp out:TCP to radio on COM18] connected to 192.168.2. 118:9130

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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:** [13 November 2023 14:03 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/7 "2023-11-13T14:03:50Z")

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> [@arniepodo](#):
>
> 13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_button] 'ui\_button' already registered by module node-red-contrib-ui\_j

You have installed two different dashboards, which are conflicting. node-red-dashboard and node-red-contrib-ui\_j. You need to uninstall node-red-contrib-ui\_j. You will have to do that using the command line. Go into your .node-red folder (that is important) on the pi and run  
`npm remove node-red-contrib-ui_j`  
then restart node-red.

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<div class="post-metadata">

**Author:** ![arniepodo](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@arniepodo](https://discourse.nodered.org/u/arniepodo)\
**Post date:** [13 November 2023 14:23 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/8 "2023-11-13T14:23:27Z")

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Thank you Colin. I did as you instructed, but the problem persists. Anything else to suggest? I did clear the cache on my browser but that did not help either.  
Thanks...Arnie

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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:** [13 November 2023 14:35 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/9 "2023-11-13T14:35:49Z")

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What is the startup log showing now?

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<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:** [13 November 2023 14:36 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/10 "2023-11-13T14:36:35Z")

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Are you still getting warnings like

> 13 Nov 08:37:34 - [warn] [node-red-dashboard/ui\_tab] 'ui\_tab' already registered by module node-red-contrib-ui\_j ?

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<div class="post-metadata">

**Author:** ![arniepodo](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@arniepodo](https://discourse.nodered.org/u/arniepodo)\
**Post date:** [13 November 2023 14:50 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/11 "2023-11-13T14:50:31Z")

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Yes, I am!

Starting as a systemd service.  
13 Nov 09:48:56 - [info]  
Welcome to Node-RED

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<div class="post-metadata">

**Author:** ![arniepodo](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@arniepodo](https://discourse.nodered.org/u/arniepodo)\
**Post date:** [13 November 2023 14:55 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/12 "2023-11-13T14:55:19Z")

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I re-ran the npm remove command and it seemed to work properly. Here is the command window output:  
pi@nodered:~ $ npm remove node-red-contrib\_ui\_j

up to date, audited 1 package in 2s

found 0 vulnerabilities

However, the problem persists.

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<div class="post-metadata">

**Author:** ![hardillb](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/hardillb/32/12373_2.png) [@hardillb](https://discourse.nodered.org/u/hardillb)\
**Post date:** [13 November 2023 14:57 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/13 "2023-11-13T14:57:56Z")

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You need to run the `npm` command in the userDir which is ` /home/pi/.node-red` (note the `.` before `node-red`.

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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:** [13 November 2023 15:16 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/14 "2023-11-13T15:16:43Z")

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As I said

> [@Colin](#):
>
> Go into your .node-red folder (that is important)

It should say that it has removed packages when you run the command.

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<div class="post-metadata">

**Author:** ![arniepodo](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@arniepodo](https://discourse.nodered.org/u/arniepodo)\
**Post date:** [13 November 2023 15:23 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/15 "2023-11-13T15:23:31Z")

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Thanks Ben! That did the trick. UI still needs work but at least it does come up now. SO I need to work on layout.  
THanks Ben and Colin and all for the help.  
I will mark this as solved for now.

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<div class="post-metadata">

**Author:** ![arniepodo](https://avatars.discourse-cdn.com/v4/letter/a/ecb155/32.png) [@arniepodo](https://discourse.nodered.org/u/arniepodo)\
**Post date:** [13 November 2023 15:34 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/16 "2023-11-13T15:34:52Z")

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Colin, I guess I missed that crucial detail. Thanks for all your help!

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<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:** [13 December 2023 15:35 UTC](https://discourse.nodered.org/t/ui-not-showing-when-i-enter-url/82810/17 "2023-12-13T15:35:21Z")

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