# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=95

[Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md)

**Page:** 96

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## [How to get meaningful error messages from functions?](https://discourse.nodered.org/t/how-to-get-meaningful-error-messages-from-functions/87757)

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**Author:** [@Cyber](https://discourse.nodered.org/u/Cyber)\
**Replies:** 4\
**Last updated:** [23 July 2024 05:07 UTC](https://discourse.nodered.org/t/how-to-get-meaningful-error-messages-from-functions/87757 "2024-07-23T05:07:05Z")

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I have got several functions, which rely on aavailabel json outputs from fronius inverters. now already the second time, after a firmware upgrade, some fields in the json output changed. :frowning: the big question: ho…

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## [Is it possible to run a script from Docker Node-RED on host that opens in a bash windo?](https://discourse.nodered.org/t/is-it-possible-to-run-a-script-from-docker-node-red-on-host-that-opens-in-a-bash-windo/89680)

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**Author:** [@Mastiff](https://discourse.nodered.org/u/Mastiff)\
**Replies:** 6\
**Last updated:** [22 July 2024 20:01 UTC](https://discourse.nodered.org/t/is-it-possible-to-run-a-script-from-docker-node-red-on-host-that-opens-in-a-bash-windo/89680 "2024-07-22T20:01:14Z")

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I am using Screen via SSH to run a backup script on the host. The tricky thing is that I want a clean backup, so I'm stopping everything including Node-RED when doing it. I would like to be able to see on VNC if the scri…

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## [Mqtt v5 TopicAlias doesn't work](https://discourse.nodered.org/t/mqtt-v5-topicalias-doesnt-work/89659)

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**Author:** [@mickym2](https://discourse.nodered.org/u/mickym2)\
**Replies:** 2\
**Last updated:** [22 July 2024 14:08 UTC](https://discourse.nodered.org/t/mqtt-v5-topicalias-doesnt-work/89659 "2024-07-22T14:08:59Z")

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I am trying out how the mqtt v5 features are working with node red. I am running mqtt against a mosquitto broker. So one feature I saw, was the use of topicAliases and I imported an example flow provided by @Steve-Mcl …

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## [Divide Mustache template output into columns](https://discourse.nodered.org/t/divide-mustache-template-output-into-columns/89668)

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**Author:** [@jttjtt](https://discourse.nodered.org/u/jttjtt)\
**Replies:** 2\
**Last updated:** [22 July 2024 12:39 UTC](https://discourse.nodered.org/t/divide-mustache-template-output-into-columns/89668 "2024-07-22T12:39:12Z")

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I am generating table of files in directory. The files are in msg.files array like: and I am using this template to generate a table: \<table\> {{#files}} \<tr\> \<td\> {{.}} \</td\> \<td\> \<a href="/f…

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## [Help with saving data from forms to a database and display it on dashboard](https://discourse.nodered.org/t/help-with-saving-data-from-forms-to-a-database-and-display-it-on-dashboard/89622)

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**Author:** [@funkyGandalf](https://discourse.nodered.org/u/funkyGandalf)\
**Replies:** 3\
**Last updated:** [22 July 2024 08:12 UTC](https://discourse.nodered.org/t/help-with-saving-data-from-forms-to-a-database-and-display-it-on-dashboard/89622 "2024-07-22T08:12:12Z")

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Hello everyone, i want to create a flow where a form is filled out with employee names, shifts (selected from a dropdown), and some individual inputs. These should then be sent/saved to a database when the submit button …

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## [Guidelines and design principles for Node-RED users](https://discourse.nodered.org/t/guidelines-and-design-principles-for-node-red-users/7238)

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**Author:** [@sybeleon](https://discourse.nodered.org/u/sybeleon)\
**Replies:** 11\
**Last updated:** [22 July 2024 06:51 UTC](https://discourse.nodered.org/t/guidelines-and-design-principles-for-node-red-users/7238 "2024-07-22T06:51:31Z")

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Hello everyone, a Node-RED newbie here. I can't say if what I'll post is reasonable or not, but I'll give it a try. My goal is to formulate a list of guidelines based on best practices, common design principles (e.g., …

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## [Problem on starting node-red](https://discourse.nodered.org/t/problem-on-starting-node-red/89655)

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**Author:** [@WernerM96](https://discourse.nodered.org/u/WernerM96)\
**Replies:** 2\
**Last updated:** [21 July 2024 20:58 UTC](https://discourse.nodered.org/t/problem-on-starting-node-red/89655 "2024-07-21T20:58:34Z")

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Since a change which causes a "connection to server lost" after changings in some nodes i am not able to start node-red any more. \> 21 Jul 18:47:33 - \[info\] \[fritzbox-callmonitor:7665017.2302b\] Connecting to fritzbox...…

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## [Searching for simple SIP node how send paylod if he well be called](https://discourse.nodered.org/t/searching-for-simple-sip-node-how-send-paylod-if-he-well-be-called/89654)

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**Author:** [@domi](https://discourse.nodered.org/u/domi)\
**Replies:** 0\
**Last updated:** [21 July 2024 16:15 UTC](https://discourse.nodered.org/t/searching-for-simple-sip-node-how-send-paylod-if-he-well-be-called/89654 "2024-07-21T16:15:14Z")

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hello im search for a node how i can register at my fritzbox. then if i call internaly the sip node (with an internal tel number) the node send a payload.

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## [HTML Links (Table) from website to CSV or Excel](https://discourse.nodered.org/t/html-links-table-from-website-to-csv-or-excel/89581)

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**Author:** [@jenssen](https://discourse.nodered.org/u/jenssen)\
**Replies:** 12\
**Last updated:** [21 July 2024 12:06 UTC](https://discourse.nodered.org/t/html-links-table-from-website-to-csv-or-excel/89581 "2024-07-21T12:06:11Z")

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Hello, Need some help to convert the table on this site: https://www.sounds-venlo.nl/verwachte-releases/?filter-type\[\]=vinyl to a CSV or Excel file. Tried some things with the html node, but no result to retrieve the f…

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## [FlowFuse - Mobile App](https://discourse.nodered.org/t/flowfuse-mobile-app/89614)

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**Author:** [@imperium85](https://discourse.nodered.org/u/imperium85)\
**Replies:** 7\
**Last updated:** [21 July 2024 07:13 UTC](https://discourse.nodered.org/t/flowfuse-mobile-app/89614 "2024-07-21T07:13:16Z")

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Hi People, I'm not sure where to ask, so I leave it in here. I have a Node-Red project (soon to be moved to FlowFuse) manages an API and getting some date through the API works as it should. I would need to build a mob…

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## [Search a Node for route the payload](https://discourse.nodered.org/t/search-a-node-for-route-the-payload/89632)

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**Author:** [@Flixm](https://discourse.nodered.org/u/Flixm)\
**Replies:** 5\
**Last updated:** [20 July 2024 06:40 UTC](https://discourse.nodered.org/t/search-a-node-for-route-the-payload/89632 "2024-07-20T06:40:18Z")

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Hi, i'm searching for a node to route the payload switched from an externel signal. for example: send a payload "1" to the "route node" an all incoming payloads routed to OUT "1" / send a payload "2" to the "route n…

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## [Is there Thehive nodes?](https://discourse.nodered.org/t/is-there-thehive-nodes/89600)

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**Author:** [@Noone47](https://discourse.nodered.org/u/Noone47)\
**Replies:** 3\
**Last updated:** [19 July 2024 17:36 UTC](https://discourse.nodered.org/t/is-there-thehive-nodes/89600 "2024-07-19T17:36:53Z")

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Hey, I am new here, and i am investigating Node-Red to see if it makes sense to use or not, and i was wondering if/why there is any TheHive nodes already made by community becouse i couldnt find anything. Thanks

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## [Conceptual Question: using node red to "migate" from one influxdb to another](https://discourse.nodered.org/t/conceptual-question-using-node-red-to-migate-from-one-influxdb-to-another/89611)

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**Author:** [@hugo99](https://discourse.nodered.org/u/hugo99)\
**Replies:** 1\
**Last updated:** [19 July 2024 13:37 UTC](https://discourse.nodered.org/t/conceptual-question-using-node-red-to-migate-from-one-influxdb-to-another/89611 "2024-07-19T13:37:06Z")

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Dears! I have a conceptual question: Is Node-RED a reasonable tool to migrate data from one InfluxDB to another InfluxDB? I am struggling with migrating the data using InfluxDB's native means. Does it make sense to que…

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## [USB Passthrough (for Modbus) from Pi 5 to a Docker container](https://discourse.nodered.org/t/usb-passthrough-for-modbus-from-pi-5-to-a-docker-container/89541)

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**Author:** [@DuncanCT](https://discourse.nodered.org/u/DuncanCT)\
**Replies:** 5\
**Last updated:** [19 July 2024 13:20 UTC](https://discourse.nodered.org/t/usb-passthrough-for-modbus-from-pi-5-to-a-docker-container/89541 "2024-07-19T13:20:14Z")

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I would like to pass though an USB FTDI RS485 to Node-RED on a RPi 5. This is my compose file: services: node-red\_dev: image: nodered/node-red:4.0.2 container\_name: node-red\_dev restart: unless-stopped …

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## [Call service node and domain](https://discourse.nodered.org/t/call-service-node-and-domain/89613)

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**Author:** [@Charlietuna](https://discourse.nodered.org/u/Charlietuna)\
**Replies:** 1\
**Last updated:** [18 July 2024 23:22 UTC](https://discourse.nodered.org/t/call-service-node-and-domain/89613 "2024-07-18T23:22:40Z")

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I'm a newbie. I think I'm missing a basic concept. When I use a call service node to turn on or off a light. It doesn't work if I use light as the domain. It only works if I use homeassistant as the domain. What am I do…

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## [Buffer parser of Modbus data](https://discourse.nodered.org/t/buffer-parser-of-modbus-data/89609)

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**Author:** [@jttjtt](https://discourse.nodered.org/u/jttjtt)\
**Replies:** 3\
**Last updated:** [18 July 2024 23:20 UTC](https://discourse.nodered.org/t/buffer-parser-of-modbus-data/89609 "2024-07-18T23:20:39Z")

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I am reading data from Solar inverter using MODBUS-Getter node. Then I am parsing the output with bufer-parser node. For example for the first values defined in modbus like: I have set the parser like this: This …

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## [Using a digital input to ramp up](https://discourse.nodered.org/t/using-a-digital-input-to-ramp-up/89585)

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**Author:** [@Tontonsams](https://discourse.nodered.org/u/Tontonsams)\
**Replies:** 4\
**Last updated:** [18 July 2024 13:43 UTC](https://discourse.nodered.org/t/using-a-digital-input-to-ramp-up/89585 "2024-07-18T13:43:21Z")

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Hey I have a question about a ramp up i'm trying to create. case : I have a speedcontroller -10 to +10V regulated. i want to use a potmeter to set the nominal speed. (value X) but before reaching that value, I would lik…

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## [Can’t login and display blank web Node-RED](https://discourse.nodered.org/t/can-t-login-and-display-blank-web-node-red/89540)

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**Author:** [@vanhaiit90](https://discourse.nodered.org/u/vanhaiit90)\
**Replies:** 9\
**Last updated:** [18 July 2024 09:59 UTC](https://discourse.nodered.org/t/can-t-login-and-display-blank-web-node-red/89540 "2024-07-18T09:59:08Z")

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Hello all, I can’t login to Node-RED and it is display blank web Node-Red after login even though the user and password are correct. Please everyone can help me and resolved issue. thank you so much

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## [toISOString getting warnings but code works](https://discourse.nodered.org/t/toisostring-getting-warnings-but-code-works/89593)

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**Author:** [@Hellis81](https://discourse.nodered.org/u/Hellis81)\
**Replies:** 4\
**Last updated:** [18 July 2024 09:04 UTC](https://discourse.nodered.org/t/toisostring-getting-warnings-but-code-works/89593 "2024-07-18T09:04:42Z")

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Every time I deploy since a few months I get a warning that a function node is not correctly configured. When I open the node toISOString is marked with red. The function works just as expected but it's getting to alwa…

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## [Serve node-editor on multiple urls? Flowfuse Oauth](https://discourse.nodered.org/t/serve-node-editor-on-multiple-urls-flowfuse-oauth/89591)

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**Author:** [@samjac0](https://discourse.nodered.org/u/samjac0)\
**Replies:** 0\
**Last updated:** [18 July 2024 07:40 UTC](https://discourse.nodered.org/t/serve-node-editor-on-multiple-urls-flowfuse-oauth/89591 "2024-07-18T07:40:57Z")

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Hi folks. New to node red. MAIN Question - Can you serve the node editor to multiple urls, and would it be through something like express using express static or RED.httpAdmin in the settings.js? Please answer this fir…

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## [Manage Palette: Is it possible to create a custom node set and don't let the user to disable them](https://discourse.nodered.org/t/manage-palette-is-it-possible-to-create-a-custom-node-set-and-dont-let-the-user-to-disable-them/89586)

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**Author:** [@ebimohi](https://discourse.nodered.org/u/ebimohi)\
**Replies:** 4\
**Last updated:** [18 July 2024 06:59 UTC](https://discourse.nodered.org/t/manage-palette-is-it-possible-to-create-a-custom-node-set-and-dont-let-the-user-to-disable-them/89586 "2024-07-18T06:59:11Z")

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Hi! Manage Palette: Is it possible to create a custom node set and don't let the user to disable them?

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## [Help with what MQTT explorer is saying and what I see](https://discourse.nodered.org/t/help-with-what-mqtt-explorer-is-saying-and-what-i-see/89554)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 6\
**Last updated:** [17 July 2024 20:35 UTC](https://discourse.nodered.org/t/help-with-what-mqtt-explorer-is-saying-and-what-i-see/89554 "2024-07-17T20:35:02Z")

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Sorry, I know... Off topic. I'm asking here as I Know you lot and (I hope) you know me. This will/should make for better/easier comms. I'm confused with what I am seeing in MQTT\_Explorer and what a CLI is showing me…

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## [Convert Array to a number](https://discourse.nodered.org/t/convert-array-to-a-number/89579)

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**Author:** [@xfear1](https://discourse.nodered.org/u/xfear1)\
**Replies:** 4\
**Last updated:** [17 July 2024 20:16 UTC](https://discourse.nodered.org/t/convert-array-to-a-number/89579 "2024-07-17T20:16:09Z")

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Hi! I'm having a problem to convert a value my PLC is sending with modbus, is says its in array, but I need to use this value to write on a chart, I don't know if I need to convert to number to be able to write in the c…

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## [Applestrudel - Alexa - newbie question - switch device?](https://discourse.nodered.org/t/applestrudel-alexa-newbie-question-switch-device/89576)

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**Author:** [@renerene](https://discourse.nodered.org/u/renerene)\
**Replies:** 3\
**Last updated:** [17 July 2024 18:39 UTC](https://discourse.nodered.org/t/applestrudel-alexa-newbie-question-switch-device/89576 "2024-07-17T18:39:46Z")

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newbie question here. Got my alexa node red applestrudel setup done. Can make her speak, add items to shopping list.... looks good. Question: How can you make alexa react to predefined phrases, i.e. "Alexa, turn light …

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## [Node-Red Crashing Upon a power fault](https://discourse.nodered.org/t/node-red-crashing-upon-a-power-fault/89520)

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**Author:** [@jundo](https://discourse.nodered.org/u/jundo)\
**Replies:** 12\
**Last updated:** [17 July 2024 17:33 UTC](https://discourse.nodered.org/t/node-red-crashing-upon-a-power-fault/89520 "2024-07-17T17:33:38Z")

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This night I had a power fault. After that my node-red does'nt open correctly and crash. I have no idea about what to do. I saw a similar old thread and I tried to start in --safe mode node-red. Unfortunately I was no…

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## [Global variable with multiple nested objects](https://discourse.nodered.org/t/global-variable-with-multiple-nested-objects/89279)

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**Author:** [@pbhanu368](https://discourse.nodered.org/u/pbhanu368)\
**Replies:** 14\
**Last updated:** [17 July 2024 16:45 UTC](https://discourse.nodered.org/t/global-variable-with-multiple-nested-objects/89279 "2024-07-17T16:45:31Z")

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I've a query, while writing and reading the data to the global variable having multiple nested objects from different flows and nodes ...will it leads to any performance issue in node red ? my global variable will be li…

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## [Weird messages in journal](https://discourse.nodered.org/t/weird-messages-in-journal/89572)

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**Author:** [@fmarzocca](https://discourse.nodered.org/u/fmarzocca)\
**Replies:** 2\
**Last updated:** [17 July 2024 13:09 UTC](https://discourse.nodered.org/t/weird-messages-in-journal/89572 "2024-07-17T13:09:54Z")

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They are few days that I am noticing these messages in journalctl -u nodered.service: 'notification update ended successfully...' 'notification update ended successfully...' 'notification update apply but we are alread…

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## [BLE keyboard events on Raspberry Pi](https://discourse.nodered.org/t/ble-keyboard-events-on-raspberry-pi/89556)

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**Author:** [@Helge](https://discourse.nodered.org/u/Helge)\
**Replies:** 1\
**Last updated:** [17 July 2024 07:50 UTC](https://discourse.nodered.org/t/ble-keyboard-events-on-raspberry-pi/89556 "2024-07-17T07:50:39Z")

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Hi there! I thought, that would be an easy one, but it turned out to be tricky instead. My project depends on a Bluetooth BLE keyboard connected to a Raspberry Pi Zero W 2 running the 64 bit arm version (released March…

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## [Help to Change X- Axis Value](https://discourse.nodered.org/t/help-to-change-x-axis-value/10874)

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**Author:** [@mrizkywiguna](https://discourse.nodered.org/u/mrizkywiguna)\
**Replies:** 37\
**Last updated:** [17 July 2024 05:17 UTC](https://discourse.nodered.org/t/help-to-change-x-axis-value/10874 "2024-07-17T05:17:39Z")

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Hi All, I want create chart coast time value, but i've some problems: I can't setup the X-Axis Value starting from 0. When i change to seconds format (ss) the grid of x - axis value is repeating in same number and …

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## [Remote I/O Error with Sequent SmartFan](https://discourse.nodered.org/t/remote-i-o-error-with-sequent-smartfan/89547)

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**Author:** [@txrocks](https://discourse.nodered.org/u/txrocks)\
**Replies:** 4\
**Last updated:** [16 July 2024 23:28 UTC](https://discourse.nodered.org/t/remote-i-o-error-with-sequent-smartfan/89547 "2024-07-16T23:28:12Z")

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Hello Everyone, I am just getting rolling with Node-Red. I got some Sequent 16 I/O boards and relay boards along with the Fan. I can get the fan to run with the command line. I have a node with the fan on the palette…

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