# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=285

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

**Page:** 286

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## [Nodes and flow dissapeared](https://discourse.nodered.org/t/nodes-and-flow-dissapeared/71411)

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**Author:** [@9toejack](https://discourse.nodered.org/u/9toejack)\
**Replies:** 4\
**Last updated:** [30 November 2022 10:23 UTC](https://discourse.nodered.org/t/nodes-and-flow-dissapeared/71411 "2022-11-30T10:23:32Z")

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Ok this is really weird, some how my water filling nodes have disappeared in my flows or i for some reason kind see them. however, the switches in my dashboard to turn the water on and off are still there and they still…

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## [How to rename the local file?](https://discourse.nodered.org/t/how-to-rename-the-local-file/71348)

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**Author:** [@ConquerAll7](https://discourse.nodered.org/u/ConquerAll7)\
**Replies:** 4\
**Last updated:** [30 November 2022 10:00 UTC](https://discourse.nodered.org/t/how-to-rename-the-local-file/71348 "2022-11-30T10:00:54Z")

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I want to rename a local file. And I try to use "fs-ops-move" node but it shows that permission denied. Is there any other way to rename the local file? Thanks in advance!

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## [Tf-model problem of undefined in object detection](https://discourse.nodered.org/t/tf-model-problem-of-undefined-in-object-detection/71268)

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**Author:** [@Gtova](https://discourse.nodered.org/u/Gtova)\
**Replies:** 8\
**Last updated:** [30 November 2022 09:23 UTC](https://discourse.nodered.org/t/tf-model-problem-of-undefined-in-object-detection/71268 "2022-11-30T09:23:25Z")

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sorry to bother you guys but i face a similar problem when i pass the image to the tf-model ""TypeError: Cannot read properties of undefined (reading 'backend')" i don't know why i got this error i think its because of…

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## [Add additional logic on POST /flows request](https://discourse.nodered.org/t/add-additional-logic-on-post-flows-request/71460)

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**Author:** [@dannyhuly](https://discourse.nodered.org/u/dannyhuly)\
**Replies:** 1\
**Last updated:** [30 November 2022 07:22 UTC](https://discourse.nodered.org/t/add-additional-logic-on-post-flows-request/71460 "2022-11-30T07:22:10Z")

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Hi, I would like to intercept the POST /flows API request (at runtime) and add additional logic before its sending a respond to the editor. After looking at the docs I wasn't able to find hooks or other options to acti…

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## [Email-in node occasionally gets stuck fetching](https://discourse.nodered.org/t/email-in-node-occasionally-gets-stuck-fetching/71450)

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**Author:** [@hepcat72](https://discourse.nodered.org/u/hepcat72)\
**Replies:** 15\
**Last updated:** [30 November 2022 00:15 UTC](https://discourse.nodered.org/t/email-in-node-occasionally-gets-stuck-fetching/71450 "2022-11-30T00:15:25Z")

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I've been using the email-in node for a few months now. And 3 times now, I have noticed that it has gotten stuck. I haven't looked into it very deeply yet, but I noted it wasn't working all day yesterday, so yesterday ev…

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## [Receive push notifications in node-red](https://discourse.nodered.org/t/receive-push-notifications-in-node-red/71108)

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**Author:** [@josechu](https://discourse.nodered.org/u/josechu)\
**Replies:** 3\
**Last updated:** [29 November 2022 23:00 UTC](https://discourse.nodered.org/t/receive-push-notifications-in-node-red/71108 "2022-11-29T23:00:17Z")

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Hi, I use very often node-red to replicate actions from webapps, or mobile apps... so that i can automate them or integrate into homeassistant... Usually to investigate flows in webapp I just inspect with Chrome... an…

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## [Node-red-contrib-tuya-smart-device "Cannot find the device"](https://discourse.nodered.org/t/node-red-contrib-tuya-smart-device-cannot-find-the-device/71425)

<div class="topic-metadata">

**Author:** [@Tobi\_t](https://discourse.nodered.org/u/Tobi_t)\
**Replies:** 2\
**Last updated:** [29 November 2022 21:07 UTC](https://discourse.nodered.org/t/node-red-contrib-tuya-smart-device-cannot-find-the-device/71425 "2022-11-29T21:07:02Z")

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Hello. As said in the title, I can't seem to find the tuya device (socket) i'm looking for. I have the Local key, device ID and IP addr. from the tuyaAPI (Im not using both ID & IP). I can find the device and control …

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## [Accessing custom properties within subflow in the template module](https://discourse.nodered.org/t/accessing-custom-properties-within-subflow-in-the-template-module/71408)

<div class="topic-metadata">

**Author:** [@cryogenicminer](https://discourse.nodered.org/u/cryogenicminer)\
**Replies:** 9\
**Last updated:** [29 November 2022 21:06 UTC](https://discourse.nodered.org/t/accessing-custom-properties-within-subflow-in-the-template-module/71408 "2022-11-29T21:06:50Z")

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Scenario: I make a subflow and add a custom string property labeled "text". Inside a function, I can use env.get("prefixText") to find the property value. What I want is to use it within a template function something l…

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## [Will it support Deno Runtime environment??](https://discourse.nodered.org/t/will-it-support-deno-runtime-environment/71473)

<div class="topic-metadata">

**Author:** [@MING-LI-JIANG](https://discourse.nodered.org/u/MING-LI-JIANG)\
**Replies:** 3\
**Last updated:** [29 November 2022 19:22 UTC](https://discourse.nodered.org/t/will-it-support-deno-runtime-environment/71473 "2022-11-29T19:22:59Z")

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Will there be a chance to support Deno (https://deno.land/) in the future?

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## [Average function in node red](https://discourse.nodered.org/t/average-function-in-node-red/71455)

<div class="topic-metadata">

**Author:** [@TiagoGuilherme](https://discourse.nodered.org/u/TiagoGuilherme)\
**Replies:** 3\
**Last updated:** [29 November 2022 17:19 UTC](https://discourse.nodered.org/t/average-function-in-node-red/71455 "2022-11-29T17:19:35Z")

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So basically I have a mqtt in and I want to do a chart with the average values of the mqtt in ( temperature sensor) and I need help creating that. Do I need a function node between the mqtt in and the chart? And what is…

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## [Flight controller (Pixhawk)](https://discourse.nodered.org/t/flight-controller-pixhawk/2743)

<div class="topic-metadata">

**Author:** [@rifkywiguna](https://discourse.nodered.org/u/rifkywiguna)\
**Replies:** 4\
**Last updated:** [29 November 2022 15:17 UTC](https://discourse.nodered.org/t/flight-controller-pixhawk/2743 "2022-11-29T15:17:58Z")

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hello, How can flight controllers (pixhawk) be read on node red and can display data (such as altitude, coordinates) on the dashboard? (sorry my english not good) Thanks

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## [Invalid Endpoint Error](https://discourse.nodered.org/t/invalid-endpoint-error/71452)

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**Author:** [@YTT](https://discourse.nodered.org/u/YTT)\
**Replies:** 6\
**Last updated:** [29 November 2022 15:05 UTC](https://discourse.nodered.org/t/invalid-endpoint-error/71452 "2022-11-29T15:05:34Z")

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How to solve this problem? I am trying to read the boolean data from ua client. I had confirmed that the username and password i key in are correct.

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## [How to use the function node to extract multiple data values](https://discourse.nodered.org/t/how-to-use-the-function-node-to-extract-multiple-data-values/71252)

<div class="topic-metadata">

**Author:** [@kolia](https://discourse.nodered.org/u/kolia)\
**Replies:** 13\
**Last updated:** [29 November 2022 14:53 UTC](https://discourse.nodered.org/t/how-to-use-the-function-node-to-extract-multiple-data-values/71252 "2022-11-29T14:53:13Z")

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Hi, unfortunately i can't get it to extract the needed values out of a data output (from MobileAlerts). Basically I can get the data out using the Node function, but the output of Mobile Alerts returns many records at …

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## [Help with Electron Node-Red](https://discourse.nodered.org/t/help-with-electron-node-red/71454)

<div class="topic-metadata">

**Author:** [@Stropwafle](https://discourse.nodered.org/u/Stropwafle)\
**Replies:** 0\
**Last updated:** [29 November 2022 14:32 UTC](https://discourse.nodered.org/t/help-with-electron-node-red/71454 "2022-11-29T14:32:00Z")

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Hey I'm just starting out with Node-Red and I would like to make my program into an executable file. I have read it was possible with Electron Node-Red. Nonetheless everytime I have tried I get errors and bugs or it jus…

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## [Troubleshooting http in node](https://discourse.nodered.org/t/troubleshooting-http-in-node/70857)

<div class="topic-metadata">

**Author:** [@hobbes1069](https://discourse.nodered.org/u/hobbes1069)\
**Replies:** 9\
**Last updated:** [29 November 2022 14:09 UTC](https://discourse.nodered.org/t/troubleshooting-http-in-node/70857 "2022-11-29T14:09:45Z")

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I'm trying to create a pseudo REST proxy and can't even get basic functionality to work. I have Node Red running on a RHEL 8 server in Azure. I can connect to it fine on 1880. In order to check basic functionality I hav…

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## [Decode LoRaWan Payload (Dragino LHT65)](https://discourse.nodered.org/t/decode-lorawan-payload-dragino-lht65/71446)

<div class="topic-metadata">

**Author:** [@\_mirjka](https://discourse.nodered.org/u/_mirjka)\
**Replies:** 2\
**Last updated:** [29 November 2022 13:58 UTC](https://discourse.nodered.org/t/decode-lorawan-payload-dragino-lht65/71446 "2022-11-29T13:58:13Z")

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Hi, I connected a Dragino Air Sensor (LHT65 1.7.3) via Chirpstack and the build in mosquitto broker to nodered. Now I use the buffer parser to decode the payload, but having problems to understand the decoding. For exa…

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## [Filter messages with a changing array size](https://discourse.nodered.org/t/filter-messages-with-a-changing-array-size/71447)

<div class="topic-metadata">

**Author:** [@gspritchard](https://discourse.nodered.org/u/gspritchard)\
**Replies:** 1\
**Last updated:** [29 November 2022 13:27 UTC](https://discourse.nodered.org/t/filter-messages-with-a-changing-array-size/71447 "2022-11-29T13:27:55Z")

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Hi, I have an array output that varies in size depending on the data it is sending. The device sends data every 60 seconds on an occupancy count for a building. Every time the data changes, it added another item into th…

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## [OPCUA client node max message exceeded](https://discourse.nodered.org/t/opcua-client-node-max-message-exceeded/71412)

<div class="topic-metadata">

**Author:** [@JackJackTan414](https://discourse.nodered.org/u/JackJackTan414)\
**Replies:** 3\
**Last updated:** [29 November 2022 12:24 UTC](https://discourse.nodered.org/t/opcua-client-node-max-message-exceeded/71412 "2022-11-29T12:24:04Z")

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Hi, This OPC UA client node just suddenly cannot take in value from the server anymore, as mentioned in the error message, the max message has been exceeded. How can i remove and add the new socket for this OPCUA client …

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## [Insert payload into message](https://discourse.nodered.org/t/insert-payload-into-message/71441)

<div class="topic-metadata">

**Author:** [@kirelam](https://discourse.nodered.org/u/kirelam)\
**Replies:** 1\
**Last updated:** [29 November 2022 11:42 UTC](https://discourse.nodered.org/t/insert-payload-into-message/71441 "2022-11-29T11:42:19Z")

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Dear Nodes, Can somebody assist me, in how to create a message, where a payload value in is inserted. Goal is to create a message for Telegram, where the name of a specifik smoke alert is inserted into a sentence, wic…

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## [Change node not working according to my problem](https://discourse.nodered.org/t/change-node-not-working-according-to-my-problem/71371)

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**Author:** [@sai.teja](https://discourse.nodered.org/u/sai.teja)\
**Replies:** 2\
**Last updated:** [29 November 2022 09:42 UTC](https://discourse.nodered.org/t/change-node-not-working-according-to-my-problem/71371 "2022-11-29T09:42:16Z")

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Hi, I have a created a data model from s7 in plc to influx dB data type using change node. Everything works fine, But I have a issue, we have total of 4 lines, so all 3 lines have 2 machines except one line which has thr…

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## [Need Help, how to send URL in "com.webos.app.browser"](https://discourse.nodered.org/t/need-help-how-to-send-url-in-com-webos-app-browser/71419)

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**Author:** [@bodo](https://discourse.nodered.org/u/bodo)\
**Replies:** 2\
**Last updated:** [29 November 2022 09:19 UTC](https://discourse.nodered.org/t/need-help-how-to-send-url-in-com-webos-app-browser/71419 "2022-11-29T09:19:25Z")

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Hi I wonder how to send the URL to the browser? I manage to display the Browser on my LG webOS with a function: msg.payload = "com.webos.app.browser"; return msg; I send this to the app node in node-red-contrib-lgtv. …

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## [Can not setup a file path](https://discourse.nodered.org/t/can-not-setup-a-file-path/71417)

<div class="topic-metadata">

**Author:** [@vi-rgaigl](https://discourse.nodered.org/u/vi-rgaigl)\
**Replies:** 2\
**Last updated:** [29 November 2022 08:39 UTC](https://discourse.nodered.org/t/can-not-setup-a-file-path/71417 "2022-11-29T08:39:18Z")

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Hi everybody, I use the node "node-red-contrib-ftp" -ftp in. Unfortunately, I am not able to include the source\_path or the destination\_filename in the path specification. Form: Debug Node: I have already tried …

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## [Fail to install tensorflow on raspberry pi Node-red](https://discourse.nodered.org/t/fail-to-install-tensorflow-on-raspberry-pi-node-red/71416)

<div class="topic-metadata">

**Author:** [@Cimbaraxe](https://discourse.nodered.org/u/Cimbaraxe)\
**Replies:** 1\
**Last updated:** [29 November 2022 08:21 UTC](https://discourse.nodered.org/t/fail-to-install-tensorflow-on-raspberry-pi-node-red/71416 "2022-11-29T08:21:44Z")

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2022-11-29T06:27:34.900Z Install : node-red-contrib-tensorflow 0.3.1 2022-11-29T06:27:32.514Z npm install --no-audit --no-update-notifier --no-fund --save --save-prefix=~ --production --engine-strict node-red-contrib-t…

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## [Node red with MariaDB RPI formatting issues](https://discourse.nodered.org/t/node-red-with-mariadb-rpi-formatting-issues/71413)

<div class="topic-metadata">

**Author:** [@HobbyFarmer](https://discourse.nodered.org/u/HobbyFarmer)\
**Replies:** 2\
**Last updated:** [29 November 2022 07:56 UTC](https://discourse.nodered.org/t/node-red-with-mariadb-rpi-formatting-issues/71413 "2022-11-29T07:56:15Z")

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Hi it's been awhile since I haunted this forum... been busy I guess. I am working with an IOT device sending temp and humidity to NR through an MQTT server on my Raspberry Pi. I am using Node red to put this into a table…

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## [Fail to install node-red on raspberry pi](https://discourse.nodered.org/t/fail-to-install-node-red-on-raspberry-pi/71239)

<div class="topic-metadata">

**Author:** [@Cimbaraxe](https://discourse.nodered.org/u/Cimbaraxe)\
**Replies:** 7\
**Last updated:** [29 November 2022 06:30 UTC](https://discourse.nodered.org/t/fail-to-install-node-red-on-raspberry-pi/71239 "2022-11-29T06:30:42Z")

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God-Did@God-Did:~ $ sudo apt install build-essential Reading package lists... Done Building dependency tree Reading state information... Done build-essential is already the newest version (12.6). 0 upgraded, 0 newly…

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## [Heating element control PWM Yes or NO](https://discourse.nodered.org/t/heating-element-control-pwm-yes-or-no/71228)

<div class="topic-metadata">

**Author:** [@9toejack](https://discourse.nodered.org/u/9toejack)\
**Replies:** 10\
**Last updated:** [29 November 2022 04:42 UTC](https://discourse.nodered.org/t/heating-element-control-pwm-yes-or-no/71228 "2022-11-29T04:42:25Z")

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Hello all, its been a few since i have been on. I have been cleaning up some of my dashboard and planning next stage. I hope I really dont sound ignorant here. but I have already been doing some searches and i have a fe…

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## [JSON Expression Blink save.video timestamp](https://discourse.nodered.org/t/json-expression-blink-save-video-timestamp/71397)

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**Author:** [@bughatti](https://discourse.nodered.org/u/bughatti)\
**Replies:** 2\
**Last updated:** [28 November 2022 20:12 UTC](https://discourse.nodered.org/t/json-expression-blink-save-video-timestamp/71397 "2022-11-28T20:12:23Z")

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I am trying to move over some of my automations from home assistant to node red. in HA, I had an automation that wrote a filename to storage when motion was detected on my blink cameras. /media/blink/backalley\_blink\_vi…

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## [Login nodered ui requires password suddenly](https://discourse.nodered.org/t/login-nodered-ui-requires-password-suddenly/70842)

<div class="topic-metadata">

**Author:** [@thedinos](https://discourse.nodered.org/u/thedinos)\
**Replies:** 10\
**Last updated:** [28 November 2022 18:04 UTC](https://discourse.nodered.org/t/login-nodered-ui-requires-password-suddenly/70842 "2022-11-28T18:04:47Z")

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I’m Quite new on this subject (tool) After successful installation I run several weeks load jobs successfully! On Linux Debian 11 (bullseye) After a reboot node-red interface comes with login screen. I checked setting…

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## [Button buzzer toggle](https://discourse.nodered.org/t/button-buzzer-toggle/71391)

<div class="topic-metadata">

**Author:** [@cscmario](https://discourse.nodered.org/u/cscmario)\
**Replies:** 0\
**Last updated:** [28 November 2022 17:26 UTC](https://discourse.nodered.org/t/button-buzzer-toggle/71391 "2022-11-28T17:26:54Z")

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Hi folks I'm trying to make up a quiz style buzzer system where a sound is played when the button is pressed but prevents other button presses. I've got my two buttons setup but cant work out how to get one to disable …

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## [From NR function to node.js runtime](https://discourse.nodered.org/t/from-nr-function-to-node-js-runtime/71332)

<div class="topic-metadata">

**Author:** [@greengolfer](https://discourse.nodered.org/u/greengolfer)\
**Replies:** 7\
**Last updated:** [28 November 2022 17:27 UTC](https://discourse.nodered.org/t/from-nr-function-to-node-js-runtime/71332 "2022-11-28T17:27:08Z")

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Hello, I have developed a quite large NR function to syntactically analyse and verify the compliance to an agreed standard (see wis2-notification-message/WIS2\_Message\_Format\_README.adoc at main · wmo-im/wis2-notificatio…

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