# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=60

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

**Page:** 61

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## [Catch errors for mqtt out](https://discourse.nodered.org/t/catch-errors-for-mqtt-out/94536)

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**Author:** [@wannestal](https://discourse.nodered.org/u/wannestal)\
**Replies:** 3\
**Last updated:** [11 January 2025 19:28 UTC](https://discourse.nodered.org/t/catch-errors-for-mqtt-out/94536 "2025-01-11T19:28:31Z")

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I use node MQTT OUT to send messages to a server. This is working well, but I want to add a buffer if for example the receiving server fails. Therefore I like to use the CATCH node, but it does not react on a connection …

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## [\[Announce\] Improved Guaranteed Delivery flow](https://discourse.nodered.org/t/announce-improved-guaranteed-delivery-flow/39877)

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**Author:** [@Colin](https://discourse.nodered.org/u/Colin)\
**Replies:** 1\
**Last updated:** [11 January 2025 18:06 UTC](https://discourse.nodered.org/t/announce-improved-guaranteed-delivery-flow/39877 "2025-01-11T18:06:34Z")

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I have dramatically simplified my Guaranteed Delivery which provides queuing and delivery of messages to a remote server, such as email, upload, influxdb writes etc. I have extracted the delivery logic into a subflow so…

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## ["TypeError: The "options" argument must be of type object. Received an instance of Array" in node-red-contrib-machine-learning](https://discourse.nodered.org/t/typeerror-the-options-argument-must-be-of-type-object-received-an-instance-of-array-in-node-red-contrib-machine-learning/93917)

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**Author:** [@SaschaMuehl](https://discourse.nodered.org/u/SaschaMuehl)\
**Replies:** 5\
**Last updated:** [11 January 2025 17:21 UTC](https://discourse.nodered.org/t/typeerror-the-options-argument-must-be-of-type-object-received-an-instance-of-array-in-node-red-contrib-machine-learning/93917 "2025-01-11T17:21:54Z")

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Hey dears, I wanna experiment with the Machine Learning Nodes of @GabrieleMaurina. Copying the example flow I get an error: ""TypeError: The "options" argument must be of type object. Received an instance of Array"" T…

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## [Athom smart devices](https://discourse.nodered.org/t/athom-smart-devices/94037)

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**Author:** [@jbudd](https://discourse.nodered.org/u/jbudd)\
**Replies:** 5\
**Last updated:** [11 January 2025 17:01 UTC](https://discourse.nodered.org/t/athom-smart-devices/94037 "2025-01-11T17:01:28Z")

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I have several smart sockets which I flash with Tasmota to operate from Node-red. Recently for the first time I bought a batch from Athom because they come with Tasmota pre-installed. Unfortunately there has been a pro…

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## [Optimise heating turn on times](https://discourse.nodered.org/t/optimise-heating-turn-on-times/94386)

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**Author:** [@Surefire01](https://discourse.nodered.org/u/Surefire01)\
**Replies:** 16\
**Last updated:** [11 January 2025 13:19 UTC](https://discourse.nodered.org/t/optimise-heating-turn-on-times/94386 "2025-01-11T13:19:36Z")

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Hi Chaps, Happy New Year to you all. More of a math thing, I would like to implement into my home heating automation flows really. My heating comes on at a time determined by the times set in a ‘Big Timer’ node (usuall…

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## [JSONata only return existing items](https://discourse.nodered.org/t/jsonata-only-return-existing-items/94523)

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**Author:** [@bakman2](https://discourse.nodered.org/u/bakman2)\
**Replies:** 6\
**Last updated:** [11 January 2025 11:39 UTC](https://discourse.nodered.org/t/jsonata-only-return-existing-items/94523 "2025-01-11T11:39:53Z")

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I have an object and an array of urls. example array: \['http://airbnb.design/feed/','http://nautil.us/rss/all'\] example object: { "attr": { "version": "1.1" }, "head": \[{ "title": \["some opml"\] }\], "body": \[ …

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## [Install Mcp23017chip](https://discourse.nodered.org/t/install-mcp23017chip/94528)

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**Author:** [@Le-Ze](https://discourse.nodered.org/u/Le-Ze)\
**Replies:** 3\
**Last updated:** [11 January 2025 11:07 UTC](https://discourse.nodered.org/t/install-mcp23017chip/94528 "2025-01-11T11:07:00Z")

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Hi. I installed node-red-contrib-mcp23017chip. I don't see the node mcp2317chip How to fix? Thank you.

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## [Removed variables in subflow remains in callers](https://discourse.nodered.org/t/removed-variables-in-subflow-remains-in-callers/94503)

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**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 13\
**Last updated:** [10 January 2025 21:29 UTC](https://discourse.nodered.org/t/removed-variables-in-subflow-remains-in-callers/94503 "2025-01-10T21:29:41Z")

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Noticed some data can unexpectedly remain in a subflow node (caller) when removed in subflow itself (definition). Lets say you have a subflow with env variables A, B and C. Now make use of that subflow in a regular flow…

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## [Flow Linter error](https://discourse.nodered.org/t/flow-linter-error/94513)

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**Author:** [@Giamma](https://discourse.nodered.org/u/Giamma)\
**Replies:** 7\
**Last updated:** [10 January 2025 19:30 UTC](https://discourse.nodered.org/t/flow-linter-error/94513 "2025-01-10T19:30:29Z")

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hi, today I installed Flow Linter and have been reported many errors ... I fixed most of them but I have 3 errors pending ... 1° error \[msg\] Parsing error: Unexpected token I have this error in all the function wher…

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## [MQTT not passed correctly to InfluxDB](https://discourse.nodered.org/t/mqtt-not-passed-correctly-to-influxdb/94492)

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**Author:** [@joselitoo](https://discourse.nodered.org/u/joselitoo)\
**Replies:** 9\
**Last updated:** [10 January 2025 19:05 UTC](https://discourse.nodered.org/t/mqtt-not-passed-correctly-to-influxdb/94492 "2025-01-10T19:05:32Z")

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Hello, i need some help with Node Red. I´m want to migrate to the newest versions of InfluxDB MQTT Broker Mosquitto and Node RED. Everything went smooth more or less. The Problem is I cannot get the nodes correctly so …

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## [Tailscale - securing MQTT messages between 2 servers](https://discourse.nodered.org/t/tailscale-securing-mqtt-messages-between-2-servers/94458)

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**Author:** [@Paul-Reed](https://discourse.nodered.org/u/Paul-Reed)\
**Replies:** 1\
**Last updated:** [10 January 2025 18:19 UTC](https://discourse.nodered.org/t/tailscale-securing-mqtt-messages-between-2-servers/94458 "2025-01-10T18:19:55Z")

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I'm using a local raspberry pi a little like a hub, to connect to local IoT devices, and to pass the data via MQTT to a Oracle cloud server, to save the data on a database, and display it on Node-RED dashboards. Having …

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## [Blocking a triggered node or flow](https://discourse.nodered.org/t/blocking-a-triggered-node-or-flow/94488)

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**Author:** [@pin32](https://discourse.nodered.org/u/pin32)\
**Replies:** 5\
**Last updated:** [10 January 2025 18:17 UTC](https://discourse.nodered.org/t/blocking-a-triggered-node-or-flow/94488 "2025-01-10T18:17:24Z")

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I'm trying to create an application with node-red, I'm stuck managing a serial. I practically send commands cyclically to the serial line, the problem I would like to solve is to block the automatic cycle when there are…

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## [A buffer as payload from function node](https://discourse.nodered.org/t/a-buffer-as-payload-from-function-node/94506)

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**Author:** [@lbh00](https://discourse.nodered.org/u/lbh00)\
**Replies:** 4\
**Last updated:** [10 January 2025 16:07 UTC](https://discourse.nodered.org/t/a-buffer-as-payload-from-function-node/94506 "2025-01-10T16:07:29Z")

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Hello, I have a flow in Node-red in which a function will have to send a binary message to the serial port node. I set up the function node with code similar to this blReply =\[217,181,0,75\]; for (i=0; i\< blReply.l…

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## [Matter Bridge node Questions](https://discourse.nodered.org/t/matter-bridge-node-questions/94306)

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**Author:** [@Buckskin](https://discourse.nodered.org/u/Buckskin)\
**Replies:** 6\
**Last updated:** [10 January 2025 12:38 UTC](https://discourse.nodered.org/t/matter-bridge-node-questions/94306 "2025-01-10T12:38:13Z")

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Can you have 2 bridges in a system i.e. can I create matter nodes for 2 different devices with 2 different bridge names? ( an early trial suggests not but I thought I would ask) The reason for the first question is …

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## [Help needed with message sequence handling](https://discourse.nodered.org/t/help-needed-with-message-sequence-handling/94504)

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**Author:** [@KarolisL](https://discourse.nodered.org/u/KarolisL)\
**Replies:** 0\
**Last updated:** [10 January 2025 10:14 UTC](https://discourse.nodered.org/t/help-needed-with-message-sequence-handling/94504 "2025-01-10T10:14:07Z")

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Hello, program below simulates trigger to HTTP camera: Single Alarm Inject can generate multiple requests to HTTP node. In this test scenario "Alarm1" will generate 4 requests. I cannot connect to cameras at the mome…

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## [I am being asked to change the credentials for my node red but i dont know how to access it and change it](https://discourse.nodered.org/t/i-am-being-asked-to-change-the-credentials-for-my-node-red-but-i-dont-know-how-to-access-it-and-change-it/94481)

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**Author:** [@Yogi2404](https://discourse.nodered.org/u/Yogi2404)\
**Replies:** 5\
**Last updated:** [9 January 2025 10:38 UTC](https://discourse.nodered.org/t/i-am-being-asked-to-change-the-credentials-for-my-node-red-but-i-dont-know-how-to-access-it-and-change-it/94481 "2025-01-09T10:38:50Z")

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## [Get data from a Paginated Api and load it into SQL table](https://discourse.nodered.org/t/get-data-from-a-paginated-api-and-load-it-into-sql-table/94469)

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**Author:** [@Mabona745](https://discourse.nodered.org/u/Mabona745)\
**Replies:** 1\
**Last updated:** [9 January 2025 09:02 UTC](https://discourse.nodered.org/t/get-data-from-a-paginated-api-and-load-it-into-sql-table/94469 "2025-01-09T09:02:30Z")

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Hi Everyone I'm new on Node-red, i just anyone to help me with the following problem. We want to get data from a paginated servicely Api, i can get all the data then extract all the columns i need, but the problem st…

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## [Node-Red Locks Up Consistently](https://discourse.nodered.org/t/node-red-locks-up-consistently/94441)

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**Author:** [@jmorris644](https://discourse.nodered.org/u/jmorris644)\
**Replies:** 13\
**Last updated:** [9 January 2025 07:37 UTC](https://discourse.nodered.org/t/node-red-locks-up-consistently/94441 "2025-01-09T07:37:32Z")

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I have 3 Ubuntu servers that are set up identically with node-red. Even the hardware is identical. I use project control to replicate the exact same set of nodes across all 3 instances of node-red. Two of the servers w…

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## [Execute SQL Query from an array object](https://discourse.nodered.org/t/execute-sql-query-from-an-array-object/94446)

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**Author:** [@Mabona745](https://discourse.nodered.org/u/Mabona745)\
**Replies:** 4\
**Last updated:** [9 January 2025 08:55 UTC](https://discourse.nodered.org/t/execute-sql-query-from-an-array-object/94446 "2025-01-09T08:55:19Z")

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Hi Everyone, i'm new to node-red, can anyone help me with this, i'm trying to load get data from Servicely Api and load it to SQL table, i'm trying to run the query which come from an array object, i'm getting the "Requ…

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## [Change node JSON processing](https://discourse.nodered.org/t/change-node-json-processing/94466)

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**Author:** [@EugeneX](https://discourse.nodered.org/u/EugeneX)\
**Replies:** 2\
**Last updated:** [9 January 2025 00:07 UTC](https://discourse.nodered.org/t/change-node-json-processing/94466 "2025-01-09T00:07:52Z")

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Hi Guys, i am completely new to node-red and this is my first attempt to build a flow to connect API with mqtt. I am pulling the API response making the HTTP call and trying to grab the fields i need from the JSON respon…

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## [Request nodes that is a black hole on error](https://discourse.nodered.org/t/request-nodes-that-is-a-black-hole-on-error/94456)

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**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 12\
**Last updated:** [8 January 2025 22:58 UTC](https://discourse.nodered.org/t/request-nodes-that-is-a-black-hole-on-error/94456 "2025-01-08T22:58:23Z")

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Today I had to do some troubleshooting related to mbus errors in node red. Something I find notable in Node-RED is how many request nodes are silent when an error occurs. They don't send any output at all! Which is super…

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## [Show grid is enable but no show the grid](https://discourse.nodered.org/t/show-grid-is-enable-but-no-show-the-grid/94454)

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**Author:** [@qinyin0717](https://discourse.nodered.org/u/qinyin0717)\
**Replies:** 4\
**Last updated:** [8 January 2025 17:58 UTC](https://discourse.nodered.org/t/show-grid-is-enable-but-no-show-the-grid/94454 "2025-01-08T17:58:16Z")

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Show grid is enable but no show the grid When I open the settings interface, the grid appears, but when I exit the settings, the grid disappears. Alternatively, when I long press the left mouse button to spam grids, th…

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## [Weird errors from m-bus](https://discourse.nodered.org/t/weird-errors-from-m-bus/94455)

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**Author:** [@ThingsTinkerer](https://discourse.nodered.org/u/ThingsTinkerer)\
**Replies:** 5\
**Last updated:** [8 January 2025 16:16 UTC](https://discourse.nodered.org/t/weird-errors-from-m-bus/94455 "2025-01-08T16:16:16Z")

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I got 3 m-bus nodes. On every deploy, each of them causes 2 errors: Error: Error relocating /data/node\_modules/node-mbus/build/Release/mbus.node: \_ZN2v820EscapableHandleScopeC1EPNS\_7IsolateE: symbol not found TypeError…

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## [Move all payloads of a topic](https://discourse.nodered.org/t/move-all-payloads-of-a-topic/94387)

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**Author:** [@micha53](https://discourse.nodered.org/u/micha53)\
**Replies:** 4\
**Last updated:** [8 January 2025 14:46 UTC](https://discourse.nodered.org/t/move-all-payloads-of-a-topic/94387 "2025-01-08T14:46:32Z")

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I have more topics with many payloads and the same structure. Is there a smart possibility to move all payloads "yxz" to "grid\_xyz" at a glance without moving all them one by one? \[{"id":"6ea593bfad2ff52c","type":"injec…

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## [TypeError: Cannot read properties of undefined (reading 'getSessions')](https://discourse.nodered.org/t/typeerror-cannot-read-properties-of-undefined-reading-getsessions/94436)

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**Author:** [@jvdnl](https://discourse.nodered.org/u/jvdnl)\
**Replies:** 12\
**Last updated:** [8 January 2025 13:53 UTC](https://discourse.nodered.org/t/typeerror-cannot-read-properties-of-undefined-reading-getsessions/94436 "2025-01-08T13:53:42Z")

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Hi everyone, i just changed my node-red installation to a new pc, switched from windows 10 to windows 11. just installed node-red with the modules i used in the past version. node-red-contrib-huemagic-fork node-red-co…

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## [MQTT node disconnecting](https://discourse.nodered.org/t/mqtt-node-disconnecting/94450)

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**Author:** [@vsk17](https://discourse.nodered.org/u/vsk17)\
**Replies:** 8\
**Last updated:** [8 January 2025 12:32 UTC](https://discourse.nodered.org/t/mqtt-node-disconnecting/94450 "2025-01-08T12:32:03Z")

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I am using MQTT node from couple of years and it's working fine. But when I am trying to establish connection now its not working. The MQTT node is getting disconnected. I don't know if this is the problem with any versi…

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## [Install a list of nodes all at once](https://discourse.nodered.org/t/install-a-list-of-nodes-all-at-once/94443)

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**Author:** [@gerry](https://discourse.nodered.org/u/gerry)\
**Replies:** 7\
**Last updated:** [8 January 2025 12:27 UTC](https://discourse.nodered.org/t/install-a-list-of-nodes-all-at-once/94443 "2025-01-08T12:27:53Z")

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Not looking to copy an install of node red but if I have a new install of node red is there any method to take a list of nodes and have that list of nodes install into node red without further intervention? Not from the …

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## [Detecting Doorbird relay activation](https://discourse.nodered.org/t/detecting-doorbird-relay-activation/94423)

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**Author:** [@jim](https://discourse.nodered.org/u/jim)\
**Replies:** 4\
**Last updated:** [8 January 2025 07:12 UTC](https://discourse.nodered.org/t/detecting-doorbird-relay-activation/94423 "2025-01-08T07:12:18Z")

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Hi all, I want to open a light for some minutes whenever someone activates one of the 5 Doorbird relays. I can do that whenever the Doorbell event is generated, but I am unable to find a node to perform same functionali…

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## [Open voice assistants](https://discourse.nodered.org/t/open-voice-assistants/94337)

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**Author:** [@Giamma](https://discourse.nodered.org/u/Giamma)\
**Replies:** 3\
**Last updated:** [7 January 2025 23:13 UTC](https://discourse.nodered.org/t/open-voice-assistants/94337 "2025-01-07T23:13:35Z")

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Could this be the future for NR too? (I would like to delete applestrudel)

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## [MQTT Brokers publicly available](https://discourse.nodered.org/t/mqtt-brokers-publicly-available/94346)

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**Author:** [@maxuser74](https://discourse.nodered.org/u/maxuser74)\
**Replies:** 26\
**Last updated:** [7 January 2025 22:22 UTC](https://discourse.nodered.org/t/mqtt-brokers-publicly-available/94346 "2025-01-07T22:22:40Z")

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Hello everybody, since I'm moving (or at least I'm willing to do) from my Digital Ocean VPS to a local hosted home server behind a Cloudflare Zero tunnel, I'm going to loose a fixed ip address for my Mosquitto MQTT Broke…

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