# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=435

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

**Page:** 436

---

## [No such file or directory when trying to read a file](https://discourse.nodered.org/t/no-such-file-or-directory-when-trying-to-read-a-file/56868)

<div class="topic-metadata">

**Author:** [@JohnMos](https://discourse.nodered.org/u/JohnMos)\
**Replies:** 5\
**Last updated:** [21 January 2022 11:24 UTC](https://discourse.nodered.org/t/no-such-file-or-directory-when-trying-to-read-a-file/56868 "2022-01-21T11:24:35Z")

</div>

Hi Everyone, I'm new to Node-Red and I cannot really find a solution for this issue on the web. Basically I want to read a csv file and display the names at the Debug. Everytime I'm using the file path I get this error …

---

## [Will there be a new discourse for the flowforge product line?](https://discourse.nodered.org/t/will-there-be-a-new-discourse-for-the-flowforge-product-line/56991)

<div class="topic-metadata">

**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Replies:** 3\
**Last updated:** [21 January 2022 11:08 UTC](https://discourse.nodered.org/t/will-there-be-a-new-discourse-for-the-flowforge-product-line/56991 "2022-01-21T11:08:45Z")

</div>

Nick, Do you plan on running a discourse for the new FlowForge setup now that you have a working product ? Git's great for bugs etc - but does not really work to build a knowledgebase or interactive Q&A environment Cr…

---

## [Report by Exception (RBE) node not working as expected](https://discourse.nodered.org/t/report-by-exception-rbe-node-not-working-as-expected/56986)

<div class="topic-metadata">

**Author:** [@henzard](https://discourse.nodered.org/u/henzard)\
**Replies:** 8\
**Last updated:** [21 January 2022 09:29 UTC](https://discourse.nodered.org/t/report-by-exception-rbe-node-not-working-as-expected/56986 "2022-01-21T09:29:45Z")

</div>

I would expect 80 to pass then 89 to pass but then 80 should fail. So only keeping the highest value until it's reset. \[ { "id": "781440cf8f7577ec", "type": "tab", "label": "Flow 1", …

---

## [Changed DNS entries are not processed by NodeRed](https://discourse.nodered.org/t/changed-dns-entries-are-not-processed-by-nodered/56995)

<div class="topic-metadata">

**Author:** [@hrikken](https://discourse.nodered.org/u/hrikken)\
**Replies:** 6\
**Last updated:** [21 January 2022 09:03 UTC](https://discourse.nodered.org/t/changed-dns-entries-are-not-processed-by-nodered/56995 "2022-01-21T09:03:27Z")

</div>

I've noticed on several NodeRed instances (in Raspberries, on Ubuntu and in Docker) that changes in DNS are not reflected in NodeRed. What I mean is: I've changed the A-record of a MQTT message broker and expect that wi…

---

## [2D/vertical UI-Table in Tabulator format?](https://discourse.nodered.org/t/2d-vertical-ui-table-in-tabulator-format/56756)

<div class="topic-metadata">

**Author:** [@interscope101](https://discourse.nodered.org/u/interscope101)\
**Replies:** 8\
**Last updated:** [20 January 2022 23:52 UTC](https://discourse.nodered.org/t/2d-vertical-ui-table-in-tabulator-format/56756 "2022-01-20T23:52:43Z")

</div>

Hello! I am using the following function to generate/update a table with THREE columns (Investment 1, Investment 2, Investment 3) and TWO rows, one showing "balance", the other "roi". I can't figure out how to impleme…

---

## [Enable light when door open (between times and set duration)](https://discourse.nodered.org/t/enable-light-when-door-open-between-times-and-set-duration/56048)

<div class="topic-metadata">

**Author:** [@Piet200](https://discourse.nodered.org/u/Piet200)\
**Replies:** 22\
**Last updated:** [19 January 2022 21:06 UTC](https://discourse.nodered.org/t/enable-light-when-door-open-between-times-and-set-duration/56048 "2022-01-19T21:06:39Z")

</div>

I have a door upstairs and if it stays open for a certain amount of time (door sensor) I want a light to turn into a specific color. This only needs to happen in the evening. Once the door closes, the original light set…

---

## [Ui-table in conjunction with ui-table handler](https://discourse.nodered.org/t/ui-table-in-conjunction-with-ui-table-handler/56554)

<div class="topic-metadata">

**Author:** [@ceysa75](https://discourse.nodered.org/u/ceysa75)\
**Replies:** 9\
**Last updated:** [20 January 2022 23:38 UTC](https://discourse.nodered.org/t/ui-table-in-conjunction-with-ui-table-handler/56554 "2022-01-20T23:38:03Z")

</div>

Hi all, I must say that the table situation in Node-Red is quite challenging, at least from a beginners perspective. And dont get me wrong, of course versatile tools as ui-tabe a very powerful. I am just thinking about …

---

## [Http request node flow broke after upgrade from 1.3.7 to 2.1.6](https://discourse.nodered.org/t/http-request-node-flow-broke-after-upgrade-from-1-3-7-to-2-1-6/56933)

<div class="topic-metadata">

**Author:** [@kinser06](https://discourse.nodered.org/u/kinser06)\
**Replies:** 19\
**Last updated:** [20 January 2022 23:20 UTC](https://discourse.nodered.org/t/http-request-node-flow-broke-after-upgrade-from-1-3-7-to-2-1-6/56933 "2022-01-20T23:20:11Z")

</div>

I have been running on the latest-10 docker image for a while and finally decided to upgrade to 14. When i did a http request flow that i had setup broke. It does a makes a POST request first and captures the response co…

---

## [Failure to start Node-red on WIN10 PC](https://discourse.nodered.org/t/failure-to-start-node-red-on-win10-pc/56988)

<div class="topic-metadata">

**Author:** [@redhair](https://discourse.nodered.org/u/redhair)\
**Replies:** 2\
**Last updated:** [20 January 2022 21:28 UTC](https://discourse.nodered.org/t/failure-to-start-node-red-on-win10-pc/56988 "2022-01-20T21:28:53Z")

</div>

Hello, I run Node-red on WIN10 PC. I start Node-red at Command prompt and then browse to 127.0.0.1 IP. It has been working in the past, but recently Edge started to return error message: Hmmm… can't reach this page 12…

---

## [\[Feature Request\]Option to turn off node status on file read node](https://discourse.nodered.org/t/feature-request-option-to-turn-off-node-status-on-file-read-node/56696)

<div class="topic-metadata">

**Author:** [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Replies:** 27\
**Last updated:** [20 January 2022 20:52 UTC](https://discourse.nodered.org/t/feature-request-option-to-turn-off-node-status-on-file-read-node/56696 "2022-01-20T20:52:01Z")

</div>

As we all know, the editor isn't a dashboard :slight\_smile: Could there be an option to to turn off the filename node status to help tidy up? :slight\_smile:

---

## [Error: ER\_PARSE\_ERROR, error in your SQL syntax](https://discourse.nodered.org/t/error-er-parse-error-error-in-your-sql-syntax/56984)

<div class="topic-metadata">

**Author:** [@AdrianFV](https://discourse.nodered.org/u/AdrianFV)\
**Replies:** 3\
**Last updated:** [20 January 2022 19:14 UTC](https://discourse.nodered.org/t/error-er-parse-error-error-in-your-sql-syntax/56984 "2022-01-20T19:14:13Z")

</div>

I don't know what is happening, I've tried everything, the code is simple and it gives me the error: "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right …

---

## [Control servi with video and node red install on rbpi](https://discourse.nodered.org/t/control-servi-with-video-and-node-red-install-on-rbpi/56979)

<div class="topic-metadata">

**Author:** [@aminulhaq](https://discourse.nodered.org/u/aminulhaq)\
**Replies:** 5\
**Last updated:** [20 January 2022 18:13 UTC](https://discourse.nodered.org/t/control-servi-with-video-and-node-red-install-on-rbpi/56979 "2022-01-20T18:13:33Z")

</div>

Hi, I want to control servo with video, if i am running video on nodered and want to control PWM according to video is it possible and how to do this Thanks Amin

---

## [Node-Red Project Unable to Deploy Git Empty Object Corrupt Error Deploy Failed](https://discourse.nodered.org/t/node-red-project-unable-to-deploy-git-empty-object-corrupt-error-deploy-failed/56827)

<div class="topic-metadata">

**Author:** [@stokes776](https://discourse.nodered.org/u/stokes776)\
**Replies:** 1\
**Last updated:** [20 January 2022 17:00 UTC](https://discourse.nodered.org/t/node-red-project-unable-to-deploy-git-empty-object-corrupt-error-deploy-failed/56827 "2022-01-20T17:00:55Z")

</div>

Sorry for then jumble of a title on this post. I am not sure what else to call it. After setting up projects and trying to use them, after a few hours I end up with this error: I've created new projects, deleted pro…

---

## [Chartjs-label - text are only empty boxes](https://discourse.nodered.org/t/chartjs-label-text-are-only-empty-boxes/56981)

<div class="topic-metadata">

**Author:** [@Lena](https://discourse.nodered.org/u/Lena)\
**Replies:** 1\
**Last updated:** [20 January 2022 17:00 UTC](https://discourse.nodered.org/t/chartjs-label-text-are-only-empty-boxes/56981 "2022-01-20T17:00:25Z")

</div>

Hey, I use the node-red-contrib-chart-image node to create a .png-file from my pie-chart. In general it is working, i get my pie chart in png, but I can´t see any text - the title is not visible and the text of the labe…

---

## [Can I "host" stand-alone nodejs apps inside UIBuilder nodes? If so, should I?](https://discourse.nodered.org/t/can-i-host-stand-alone-nodejs-apps-inside-uibuilder-nodes-if-so-should-i/51813)

<div class="topic-metadata">

**Author:** [@shrickus](https://discourse.nodered.org/u/shrickus)\
**Replies:** 15\
**Last updated:** [20 January 2022 16:06 UTC](https://discourse.nodered.org/t/can-i-host-stand-alone-nodejs-apps-inside-uibuilder-nodes-if-so-should-i/51813 "2022-01-20T16:06:57Z")

</div>

I think i'm trying to do something with UIBuilder that it is not meant to do... but i'll see if anybody else has tried something similar. I have a nodejs app that has 2 express servers running on different ports -- 1 to…

---

## [JSON output to html not right formatted but showing &quot;](https://discourse.nodered.org/t/json-output-to-html-not-right-formatted-but-showing-quot/56970)

<div class="topic-metadata">

**Author:** [@rednas](https://discourse.nodered.org/u/rednas)\
**Replies:** 4\
**Last updated:** [20 January 2022 15:04 UTC](https://discourse.nodered.org/t/json-output-to-html-not-right-formatted-but-showing-quot/56970 "2022-01-20T15:04:56Z")

</div>

I am trying to read sensor data from Home Assistant with GET requests. I want to return the data using JSON. I can get it to return: {"result":"off"} However, when I set the header content-type to application/json it …

---

## [Unable to connection mqtt](https://discourse.nodered.org/t/unable-to-connection-mqtt/56542)

<div class="topic-metadata">

**Author:** [@MrEngineer](https://discourse.nodered.org/u/MrEngineer)\
**Replies:** 9\
**Last updated:** [20 January 2022 14:50 UTC](https://discourse.nodered.org/t/unable-to-connection-mqtt/56542 "2022-01-20T14:50:42Z")

</div>

hallo, first of all happy new year!!! for my work i want to experience someting. i have an arduino mkr1310 with LoRa. I'am able to connect the microcontroller with kpn. Now i want to send the data from KPN to Node-red …

---

## [Printing label from Node-Red Flow](https://discourse.nodered.org/t/printing-label-from-node-red-flow/56533)

<div class="topic-metadata">

**Author:** [@telliottosceola](https://discourse.nodered.org/u/telliottosceola)\
**Replies:** 15\
**Last updated:** [20 January 2022 14:30 UTC](https://discourse.nodered.org/t/printing-label-from-node-red-flow/56533 "2022-01-20T14:30:27Z")

</div>

Hi Everyone, I found this post and it's exactly what I'm looking to do(print labels from Node-Red Flow): @Steve-Mcl and @madmax were discussing generating labels with QR codes from a flow. I modified it slightly and a…

---

## [Is there an API to control Node-RED](https://discourse.nodered.org/t/is-there-an-api-to-control-node-red/56960)

<div class="topic-metadata">

**Author:** [@guyluz11](https://discourse.nodered.org/u/guyluz11)\
**Replies:** 1\
**Last updated:** [20 January 2022 11:31 UTC](https://discourse.nodered.org/t/is-there-an-api-to-control-node-red/56960 "2022-01-20T11:31:25Z")

</div>

I was wondering if there is a way to add, delete, connect nodes inside Node-RED from an outside source without the GUI. For example from the command line or some kind of requests that I can use in my programming languag…

---

## [Presence Simulation with tasmota (record and playback messages)](https://discourse.nodered.org/t/presence-simulation-with-tasmota-record-and-playback-messages/56804)

<div class="topic-metadata">

**Author:** [@JobbeDeluxe](https://discourse.nodered.org/u/JobbeDeluxe)\
**Replies:** 3\
**Last updated:** [20 January 2022 09:55 UTC](https://discourse.nodered.org/t/presence-simulation-with-tasmota-record-and-playback-messages/56804 "2022-01-20T09:55:59Z")

</div>

Hello, I try to get a Presence Simulation. It should record 24h or 48h and than if i start this, it should do exact the same that was record for the next 24h or 48h. i can get all status, no problem. but can i them sto…

---

## [Extract value from array, based on timestamp](https://discourse.nodered.org/t/extract-value-from-array-based-on-timestamp/56954)

<div class="topic-metadata">

**Author:** [@haavardbj](https://discourse.nodered.org/u/haavardbj)\
**Replies:** 6\
**Last updated:** [20 January 2022 09:40 UTC](https://discourse.nodered.org/t/extract-value-from-array-based-on-timestamp/56954 "2022-01-20T09:40:07Z")

</div>

Hi I have a set of data in an array that i fetch from Nordpool. This array has the same set of data every-time. looks like this: What i would like to achieve, is to extract new data from the array every hour. EX: A…

---

## [Updating Flows Remotely](https://discourse.nodered.org/t/updating-flows-remotely/56904)

<div class="topic-metadata">

**Author:** [@Cristian](https://discourse.nodered.org/u/Cristian)\
**Replies:** 9\
**Last updated:** [20 January 2022 08:58 UTC](https://discourse.nodered.org/t/updating-flows-remotely/56904 "2022-01-20T08:58:52Z")

</div>

Good day everyone! I almost finished an app that will run on multiple machines (powered by Raspberry Pi's). None of these machines have a fixed IP and all of them will send some data to a server at regular intervals of …

---

## [Creer un array avec msg.payload et msg.topic](https://discourse.nodered.org/t/creer-un-array-avec-msg-payload-et-msg-topic/56929)

<div class="topic-metadata">

**Author:** [@idiot\_du\_village](https://discourse.nodered.org/u/idiot_du_village)\
**Replies:** 5\
**Last updated:** [20 January 2022 07:07 UTC](https://discourse.nodered.org/t/creer-un-array-avec-msg-payload-et-msg-topic/56929 "2022-01-20T07:07:31Z")

</div>

Hello everyone, I am looking to create an array with a cycle of messages. the message contains msg.payload with a variable value and msg.topic with a cyclic value. this is data coming from a lidar msg.topic an angle …

---

## [Cannot read property "Temperature" of undefined](https://discourse.nodered.org/t/cannot-read-property-temperature-of-undefined/56942)

<div class="topic-metadata">

**Author:** [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Replies:** 2\
**Last updated:** [20 January 2022 00:39 UTC](https://discourse.nodered.org/t/cannot-read-property-temperature-of-undefined/56942 "2022-01-20T00:39:04Z")

</div>

I'm sure others have asked similar here before, but can anyone spot the cause of this error in the debug bar (screenshot below)? I have used the little "copy path" button to ensure I have the correct object path. I thin…

---

## [Node-Red running out of memory generating SQL strings](https://discourse.nodered.org/t/node-red-running-out-of-memory-generating-sql-strings/56934)

<div class="topic-metadata">

**Author:** [@jmorris644](https://discourse.nodered.org/u/jmorris644)\
**Replies:** 8\
**Last updated:** [20 January 2022 00:00 UTC](https://discourse.nodered.org/t/node-red-running-out-of-memory-generating-sql-strings/56934 "2022-01-20T00:00:18Z")

</div>

I have a music library that has a few thousand files in it. I am hoping to create a user interface to help me manage all of the data. The music library outputs the library contents using XML. I am trying to capture that…

---

## [One button - one bulb - on/off/brightness](https://discourse.nodered.org/t/one-button-one-bulb-on-off-brightness/56627)

<div class="topic-metadata">

**Author:** [@migsun](https://discourse.nodered.org/u/migsun)\
**Replies:** 31\
**Last updated:** [19 January 2022 23:18 UTC](https://discourse.nodered.org/t/one-button-one-bulb-on-off-brightness/56627 "2022-01-19T23:18:46Z")

</div>

Linkind's Zigbee one-button sends 5 different messages. on first short press (on), second (off), holding button (brightness\_move\_up), next long hold (brightness\_move\_down) and by releasing the button (brightness\_stop). …

---

## [Invalid Json - "Unexpected M"](https://discourse.nodered.org/t/invalid-json-unexpected-m/56936)

<div class="topic-metadata">

**Author:** [@pete\_hart](https://discourse.nodered.org/u/pete_hart)\
**Replies:** 3\
**Last updated:** [19 January 2022 22:46 UTC](https://discourse.nodered.org/t/invalid-json-unexpected-m/56936 "2022-01-19T22:46:54Z")

</div>

Hey all, New Here. Quick question- I am looking to hit an API and it expects a Json of data. I am trying to write different parts of the payload to fields in the api call. I know im doing something stupid - Any i…

---

## [Create 16 single bit input to a 16bit modbus value](https://discourse.nodered.org/t/create-16-single-bit-input-to-a-16bit-modbus-value/56938)

<div class="topic-metadata">

**Author:** [@rogier](https://discourse.nodered.org/u/rogier)\
**Replies:** 1\
**Last updated:** [19 January 2022 22:45 UTC](https://discourse.nodered.org/t/create-16-single-bit-input-to-a-16bit-modbus-value/56938 "2022-01-19T22:45:29Z")

</div>

i want to convert 16 time single bit into one 16 bit value for my modbus project. when 1 bit input change the 16 bit value has also to change. There has to be a memory of all the states of the inputs... has somebody an …

---

## [Use of the Smooth Node to process Array Output](https://discourse.nodered.org/t/use-of-the-smooth-node-to-process-array-output/56915)

<div class="topic-metadata">

**Author:** [@MakerMan](https://discourse.nodered.org/u/MakerMan)\
**Replies:** 23\
**Last updated:** [19 January 2022 20:47 UTC](https://discourse.nodered.org/t/use-of-the-smooth-node-to-process-array-output/56915 "2022-01-19T20:47:08Z")

</div>

I have temperature data in a database and I want to display this over differing time periods. A query runs (on startup or manually) and the output is produced which feeds chart nodes with historic data. The query retur…

---

## [Function shut generate Xor Checksum over 4 variables](https://discourse.nodered.org/t/function-shut-generate-xor-checksum-over-4-variables/56353)

<div class="topic-metadata">

**Author:** [@olby2](https://discourse.nodered.org/u/olby2)\
**Replies:** 5\
**Last updated:** [19 January 2022 20:46 UTC](https://discourse.nodered.org/t/function-shut-generate-xor-checksum-over-4-variables/56353 "2022-01-19T20:46:52Z")

</div>

hello dear people, I have to create a checksum over 4 variables via XOR, but I cannot find any usable information here that will help me further the checksum itself is only one byte long Does anyone have valuable help…

[Previous page](https://discourse.nodered.org/c/general/7.md?page=434)

[Next page](https://discourse.nodered.org/c/general/7.md?page=436)