Fatal error: cannot acces dashboard

General
1

Dear All,

I was working with my node-red application and installing an old flow with out the palettes installed.
When installing some philips Hue nodes suddenly node-red crashed and can not start up again.

Got en error from PM2 log:

Api Error: Unexpected response status; 404
at requireStatusCode200 (/home/MASTERM09/.node-red/node_modules/node-hue-api/hue-api/httpPromise.js:100:15)
at _fulfilled (/home/MASTERM09/.node-red/node_modules/q/q.js:787:54)
at /home/MASTERM09/.node-red/node_modules/q/q.js:816:30
at Promise.promise.promiseDispatch (/home/MASTERM09/.node-red/node_modules/q/q.js:749:13)
at /home/MASTERM09/.node-red/node_modules/q/q.js:557:44
at flush (/home/MASTERM09/.node-red/node_modules/q/q.js:108:17)
at process.processTicksAndRejections (node:internal/process/task_queues:77:11)

What is my solution? I can not access node-red any more for the moment.

Thank you.

2

you can use node-red --safe it will start node-red without starting the flows, then you can modify the flows (remove the hue nodes) and deploy

3

Start node red up with the safe option node-red --safe
Now you can remove the nodes that gives you problems.

1 Like
4

Thank you, but the program is runned without sudo

so using node-red --save gives me error:

> 
> MASTERM09@OBSGROMMEM09MASTER:~ $ node-red --safe
> 18 Jul 22:11:19 - [info]
> 
> Welcome to Node-RED
> ===================
> 
> 18 Jul 22:11:19 - [info] Node-RED version: v3.0.2
> 18 Jul 22:11:19 - [info] Node.js  version: v20.3.1
> 18 Jul 22:11:19 - [info] Linux 6.1.21-v8+ arm64 LE
> 18 Jul 22:11:19 - [info] Loading palette nodes
> 18 Jul 22:11:24 - [info] Dashboard version 3.5.0 started at /ui
> 18 Jul 22:11:25 - [warn] rpi-gpio : Raspberry Pi specific node set inactive
> 18 Jul 22:11:25 - [info] Settings file  : /home/MASTERM09/.node-red/settings.js
> 18 Jul 22:11:25 - [info] Context store  : 'default' [module=memory]
> 18 Jul 22:11:25 - [info] User directory : /home/MASTERM09/.node-red
> 18 Jul 22:11:25 - [warn] Projects disabled : editorTheme.projects.enabled=false
> 18 Jul 22:11:25 - [info] Flows file     : /home/MASTERM09/.node-red/flows.json
> 18 Jul 22:11:25 - [info] Server now running at http://127.0.0.1:1880/
> 18 Jul 22:11:25 - [warn]
> 
> ---------------------------------------------------------------------
> Your flow credentials file is encrypted using a system-generated key.
> 
> If the system-generated key is lost for any reason, your credentials
> file will not be recoverable, you will have to delete it and re-enter
> your credentials.
> 
> You should set your own key using the 'credentialSecret' option in
> your settings file. Node-RED will then re-encrypt your credentials
> file using your chosen key the next time you deploy a change.
> ---------------------------------------------------------------------
> 
> 18 Jul 22:11:25 - [info] *****************************************************************
> 18 Jul 22:11:25 - [info] Flows stopped in safe mode. Deploy to start.
> 18 Jul 22:11:25 - [info] *****************************************************************
> 18 Jul 22:11:25 - [red] Uncaught Exception:
> 18 Jul 22:11:25 - [error] Api Error: Unexpected response status; 404
>     at requireStatusCode200 (/home/MASTERM09/.node-red/node_modules/node-hue-api/hue-api/httpPromise.js:100:15)
>     at _fulfilled (/home/MASTERM09/.node-red/node_modules/q/q.js:787:54)
>     at /home/MASTERM09/.node-red/node_modules/q/q.js:816:30
>     at Promise.promise.promiseDispatch (/home/MASTERM09/.node-red/node_modules/q/q.js:749:13)
>     at /home/MASTERM09/.node-red/node_modules/q/q.js:557:44
>     at flush (/home/MASTERM09/.node-red/node_modules/q/q.js:108:17)
>     at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
5

Which node are you using and how did you install it ?

6

Dear, i have node v20.3.1 installed.
I installed node-red with the official install page:
https://nodered.org/docs/getting-started/raspberrypi

It worked fine for long. But when i entered some "old" flows i got the error.

> 18 Jul 22:11:25 - [error] Api Error: Unexpected response status; 404
>     at requireStatusCode200 (/home/MASTERM09/.node-red/node_modules/node-hue-api/hue-api/httpPromise.js:100:15)
>     at _fulfilled (/home/MASTERM09/.node-red/node_modules/q/q.js:787:54)
>     at /home/MASTERM09/.node-red/node_modules/q/q.js:816:30

wrong API code maybe? I was installing node-red etc on a new computer, and also the Hue brigde etc.
I copied the old flows, but maybe there is the error coming from?

7

I actually mean the hue node eg is it node-red-contrib-node-hue

However for node-red you should be using node 16 or 18, not 20

8

Thank you all. I just ended up with reinstalling the version of node red. The problem was the identification code with the Hue Bridge. Everything is working now as expected.

9

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