# Latest

**URL:** https://discourse.nodered.org/latest.md?page=1252

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

**Page:** 1253

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## [While reading and trying to help, I got stuck](https://discourse.nodered.org/t/while-reading-and-trying-to-help-i-got-stuck/13491)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 0\
**Last updated:** [19 July 2019 23:47 UTC](https://discourse.nodered.org/t/while-reading-and-trying-to-help-i-got-stuck/13491 "2019-07-19T23:47:10Z")

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While trying to help Hyper, I got stuck with how to set icons on button nodes. Yes, I probably deserve a flame, but something is really wrong somewhere. This is the flow - very basic: Press one button I get the bolt i…

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## [Tab with credentials?](https://discourse.nodered.org/t/tab-with-credentials/13478)

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**Author:** [@robertocanton](https://discourse.nodered.org/u/robertocanton)\
**Replies:** 9\
**Last updated:** [19 July 2019 20:21 UTC](https://discourse.nodered.org/t/tab-with-credentials/13478 "2019-07-19T20:21:02Z")

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Hi, i'm using dashboard and i need a tab with credentials to show the content of it. How can i achive this?

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## [Wunderground nodes not working](https://discourse.nodered.org/t/wunderground-nodes-not-working/13352)

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**Author:** [@mshaz](https://discourse.nodered.org/u/mshaz)\
**Replies:** 5\
**Last updated:** [19 July 2019 14:49 UTC](https://discourse.nodered.org/t/wunderground-nodes-not-working/13352 "2019-07-19T14:49:27Z")

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Hi , Hope someone can help me. I tried putting in coordinates from WU doesn't work too. The api key is correct. Thank you

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## [Slow down PCA9685 servo](https://discourse.nodered.org/t/slow-down-pca9685-servo/13464)

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**Author:** [@mshaz](https://discourse.nodered.org/u/mshaz)\
**Replies:** 2\
**Last updated:** [19 July 2019 09:31 UTC](https://discourse.nodered.org/t/slow-down-pca9685-servo/13464 "2019-07-19T09:31:24Z")

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Hi I need help, I can get the servo running but I need to slow down a bit the rotations. I m making a robot. This was the node that i used. How do i do this in correct way? Below is my flow. Thank you

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## [Problem installing Tellstick Duo on Buster - Fixed](https://discourse.nodered.org/t/problem-installing-tellstick-duo-on-buster-fixed/13443)

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**Author:** [@Mastiff](https://discourse.nodered.org/u/Mastiff)\
**Replies:** 5\
**Last updated:** [19 July 2019 11:28 UTC](https://discourse.nodered.org/t/problem-installing-tellstick-duo-on-buster-fixed/13443 "2019-07-19T11:28:51Z")

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I have a new Pi 4 for parts of my system. I need to install Telldus Tellstick, and I get close, but not quite. Googling didn't turn up anything that worked, I'm probably the fist one trying to install Telldus on Buster. :…

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## [DropDown - Refresh list from MySQL](https://discourse.nodered.org/t/dropdown-refresh-list-from-mysql/13480)

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**Author:** [@ylechasseur](https://discourse.nodered.org/u/ylechasseur)\
**Replies:** 0\
**Last updated:** [19 July 2019 10:39 UTC](https://discourse.nodered.org/t/dropdown-refresh-list-from-mysql/13480 "2019-07-19T10:39:14Z")

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Hi, I have several DropDown on my project.They are populated by a MYSQL query. Often, my DropDown are empty when I open the page and if I do a refresh then the data is showed on the dropdown. I am wondering if, like in…

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## [Kalman filter not working](https://discourse.nodered.org/t/kalman-filter-not-working/13468)

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**Author:** [@innotractor](https://discourse.nodered.org/u/innotractor)\
**Replies:** 4\
**Last updated:** [19 July 2019 08:50 UTC](https://discourse.nodered.org/t/kalman-filter-not-working/13468 "2019-07-19T08:50:32Z")

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Hi, The designer is not responding, perhaps somebody has the same experience as I. I am interested in applying the kalman filter to process RSSI values in general. Before coding, I just made the most simple configurat…

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## [SmartPi2 and Wall Sockets](https://discourse.nodered.org/t/smartpi2-and-wall-sockets/13471)

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**Author:** [@Hans](https://discourse.nodered.org/u/Hans)\
**Replies:** 0\
**Last updated:** [19 July 2019 07:23 UTC](https://discourse.nodered.org/t/smartpi2-and-wall-sockets/13471 "2019-07-19T07:23:46Z")

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Hi, Iam planning to use the installed Node-RED on my SmartPi2 Module with an DECT Wall Socket. If the current is negative (more energy is produced than consumed) I would like to use Node-Red to switch on a DECT Socket!…

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## [Node.js - a dumb question (and off topic)](https://discourse.nodered.org/t/node-js-a-dumb-question-and-off-topic/13386)

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**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 5\
**Last updated:** [19 July 2019 04:34 UTC](https://discourse.nodered.org/t/node-js-a-dumb-question-and-off-topic/13386 "2019-07-19T04:34:49Z")

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Yeah, So it has been determined that I have Node.js installed. I'm still coming to grips with where Ubuntu puts its programs, so I am at a loss how to invoke it. So I type node from the cli. How do I exit when done? …

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## [Problem with updating node-red](https://discourse.nodered.org/t/problem-with-updating-node-red/13450)

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**Author:** [@mrkurt](https://discourse.nodered.org/u/mrkurt)\
**Replies:** 8\
**Last updated:** [18 July 2019 21:44 UTC](https://discourse.nodered.org/t/problem-with-updating-node-red/13450 "2019-07-18T21:44:06Z")

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When I update node-red to the latest version, an error occurs all the time: npm ERR! code E404 npm ERR! 404 Not Found - GET https://registry.npmjs.org/@node-red%2Fruntime - User not found npm ERR! 404 npm ERR! 404 '@…

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## [I have a suggestion for nodered developer](https://discourse.nodered.org/t/i-have-a-suggestion-for-nodered-developer/13354)

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**Author:** [@Hakimelyoubi](https://discourse.nodered.org/u/Hakimelyoubi)\
**Replies:** 3\
**Last updated:** [18 July 2019 20:20 UTC](https://discourse.nodered.org/t/i-have-a-suggestion-for-nodered-developer/13354 "2019-07-18T20:20:32Z")

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Hello community I need a widgets for smart home like animation of lamp or plug or curtain switch Also in industriel like motor , ...... Thank you advenced

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## [Globalcache iTach IP2SL](https://discourse.nodered.org/t/globalcache-itach-ip2sl/13456)

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**Author:** [@dvargas87](https://discourse.nodered.org/u/dvargas87)\
**Replies:** 0\
**Last updated:** [18 July 2019 18:34 UTC](https://discourse.nodered.org/t/globalcache-itach-ip2sl/13456 "2019-07-18T18:34:07Z")

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Hi everyone, I am attempting to send a string message to a globalcache IP2SL device in which I get the devices attached to the unit. I am using the node-red-contrib-globalcache pallete a {"serial":"getdevices,1:1,2"} m…

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## [Modbus 16bit words to doubleword problems](https://discourse.nodered.org/t/modbus-16bit-words-to-doubleword-problems/13453)

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**Author:** [@pautorras](https://discourse.nodered.org/u/pautorras)\
**Replies:** 4\
**Last updated:** [18 July 2019 18:28 UTC](https://discourse.nodered.org/t/modbus-16bit-words-to-doubleword-problems/13453 "2019-07-18T18:28:19Z")

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Hi Everyone, I'm having problems converting modbus word registers (16 bits) to double (32 bits) format. Modbus RTU Buffered using node-red-contrib-modbus (4.1.3) I've tryed to use this (Buffer) in a function but it's …

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## [Nbrowser How to](https://discourse.nodered.org/t/nbrowser-how-to/13418)

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**Author:** [@jrgcid](https://discourse.nodered.org/u/jrgcid)\
**Replies:** 1\
**Last updated:** [18 July 2019 16:16 UTC](https://discourse.nodered.org/t/nbrowser-how-to/13418 "2019-07-18T16:16:27Z")

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Hi all, I'm trying to figure out how to use nbrowser, node-red-contrib-nbrowser, to automate a login process and task on a website, however I can't understand how interact with the electron browser. I checked the optio…

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## [My dashboard doesn't work](https://discourse.nodered.org/t/my-dashboard-doesnt-work/13376)

<div class="topic-metadata">

**Author:** [@sofiir](https://discourse.nodered.org/u/sofiir)\
**Replies:** 9\
**Last updated:** [18 July 2019 16:13 UTC](https://discourse.nodered.org/t/my-dashboard-doesnt-work/13376 "2019-07-18T16:13:22Z")

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Please add some UI nodes to your flow and redeploy.:frowning\_face: Anyone knows where is the problem please

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## [Set trigger node's delay time from context value](https://discourse.nodered.org/t/set-trigger-nodes-delay-time-from-context-value/13415)

<div class="topic-metadata">

**Author:** [@jovee](https://discourse.nodered.org/u/jovee)\
**Replies:** 8\
**Last updated:** [18 July 2019 15:51 UTC](https://discourse.nodered.org/t/set-trigger-nodes-delay-time-from-context-value/13415 "2019-07-18T15:51:09Z")

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Hi! I'm using a universally-set delay time stored in flow context, which works great with delay nodes as they can be overridden with the msg.delay property, but not so much with the trigger node. I've been trying to wri…

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## [Dynamic min/max configuration (e. g. for gauge)](https://discourse.nodered.org/t/dynamic-min-max-configuration-e-g-for-gauge/13447)

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**Author:** [@tot92](https://discourse.nodered.org/u/tot92)\
**Replies:** 3\
**Last updated:** [18 July 2019 15:27 UTC](https://discourse.nodered.org/t/dynamic-min-max-configuration-e-g-for-gauge/13447 "2019-07-18T15:27:53Z")

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Hi there, is it possible to dynamically set the range (min/max) of a gauge node ({{msg.xy}} syntax)? If not, this would be a nice feature for future releases... (not only for gauge nodes). Cheers, Tobias

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## [httpStatic and NR Projects](https://discourse.nodered.org/t/httpstatic-and-nr-projects/13391)

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**Author:** [@Sineos](https://discourse.nodered.org/u/Sineos)\
**Replies:** 2\
**Last updated:** [18 July 2019 12:58 UTC](https://discourse.nodered.org/t/httpstatic-and-nr-projects/13391 "2019-07-18T12:58:02Z")

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Is it possible to include the files in the httpStatic path in the Project's version control feature?

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## [Video device monitoring - typically wifi ip-cameras](https://discourse.nodered.org/t/video-device-monitoring-typically-wifi-ip-cameras/13425)

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**Author:** [@krambriw](https://discourse.nodered.org/u/krambriw)\
**Replies:** 11\
**Last updated:** [18 July 2019 12:29 UTC](https://discourse.nodered.org/t/video-device-monitoring-typically-wifi-ip-cameras/13425 "2019-07-18T12:29:30Z")

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I have a situation maybe familiar to other users of wifi connected ip-cameras. Sometimes the connection to one or more is lost for a shorter or longer period. For various network related reasons. At least this happens to…

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## [Host my dashboard on an external server](https://discourse.nodered.org/t/host-my-dashboard-on-an-external-server/13431)

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**Author:** [@salahuiste](https://discourse.nodered.org/u/salahuiste)\
**Replies:** 3\
**Last updated:** [18 July 2019 11:08 UTC](https://discourse.nodered.org/t/host-my-dashboard-on-an-external-server/13431 "2019-07-18T11:08:19Z")

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hello do you know any websites that can provide me hosting for my dashboard ? thank you

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## [Configure Inline Keyboard](https://discourse.nodered.org/t/configure-inline-keyboard/13432)

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**Author:** [@Didi](https://discourse.nodered.org/u/Didi)\
**Replies:** 2\
**Last updated:** [18 July 2019 11:00 UTC](https://discourse.nodered.org/t/configure-inline-keyboard/13432 "2019-07-18T11:00:23Z")

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someone knows how I can configure a flow for a bot where I have the watson assistant of ibm and can be displayed in telegram the buttons (Inline Keyboard)

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## [Html link to local folder in Windows](https://discourse.nodered.org/t/html-link-to-local-folder-in-windows/13426)

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**Author:** [@Nxito](https://discourse.nodered.org/u/Nxito)\
**Replies:** 2\
**Last updated:** [18 July 2019 08:47 UTC](https://discourse.nodered.org/t/html-link-to-local-folder-in-windows/13426 "2019-07-18T08:47:49Z")

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hello forum people, I wanted to know how you can create a link to a local folder on windows using hmtl as the image that I attached (see list of files and be able to download them). I have seen several things like conf…

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## [Array changes after a time](https://discourse.nodered.org/t/array-changes-after-a-time/13414)

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**Author:** [@debouttek](https://discourse.nodered.org/u/debouttek)\
**Replies:** 3\
**Last updated:** [18 July 2019 06:14 UTC](https://discourse.nodered.org/t/array-changes-after-a-time/13414 "2019-07-18T06:14:23Z")

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I'm reading a power consumption device with 2 clamps for solar production and my power consumption. I have good readings and the problem is a array problem. I would like to subtract my Consumption minus solar production…

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## [Projects disabled: git command not found](https://discourse.nodered.org/t/projects-disabled-git-command-not-found/13421)

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**Author:** [@nguyenvudtd](https://discourse.nodered.org/u/nguyenvudtd)\
**Replies:** 1\
**Last updated:** [18 July 2019 06:33 UTC](https://discourse.nodered.org/t/projects-disabled-git-command-not-found/13421 "2019-07-18T06:33:43Z")

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I have install Node-red. it not work. can you help me. editorTheme: { menu: { "menu-item-help": { label: "Node-RED Pi Website", url: "http://nodered.org/docs/hardware/raspberrypi.html" } }, projects: { enabled: tr…

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## [Node-Red mentioned in Control Magazine](https://discourse.nodered.org/t/node-red-mentioned-in-control-magazine/13188)

<div class="topic-metadata">

**Author:** [@netwingduck](https://discourse.nodered.org/u/netwingduck)\
**Replies:** 11\
**Last updated:** [18 July 2019 06:04 UTC](https://discourse.nodered.org/t/node-red-mentioned-in-control-magazine/13188 "2019-07-18T06:04:33Z")

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I just thought I'd mention it since I didn't already see it mentioned. I work in industrial controls and been using node-red for almost 2 years now. I'am generally alone in this when I talk and work with other control'…

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## [Mqtt connection ..failed](https://discourse.nodered.org/t/mqtt-connection-failed/13419)

<div class="topic-metadata">

**Author:** [@sofiir](https://discourse.nodered.org/u/sofiir)\
**Replies:** 12\
**Last updated:** [17 July 2019 23:55 UTC](https://discourse.nodered.org/t/mqtt-connection-failed/13419 "2019-07-17T23:55:10Z")

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I want to try this basic ESP8266 MQTT example : I want to publish a msg on Node-red I started mosquitto . But I'm getting this error ,: Anyone have an idea where is the problem please?

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## [String replace - help please](https://discourse.nodered.org/t/string-replace-help-please/13388)

<div class="topic-metadata">

**Author:** [@Trying\_to\_learn](https://discourse.nodered.org/u/Trying_to_learn)\
**Replies:** 24\
**Last updated:** [17 July 2019 23:07 UTC](https://discourse.nodered.org/t/string-replace-help-please/13388 "2019-07-17T23:07:43Z")

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(The village idiot is out again) I'm wanting to create a "payload" of the date/time. (Basically a log file name of meaning.) This is the code I have: I'm going to do other things with it, but this is the basic model. …

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## [Switch Node- Default](https://discourse.nodered.org/t/switch-node-default/13403)

<div class="topic-metadata">

**Author:** [@SteveMann](https://discourse.nodered.org/u/SteveMann)\
**Replies:** 16\
**Last updated:** [17 July 2019 21:35 UTC](https://discourse.nodered.org/t/switch-node-default/13403 "2019-07-17T21:35:51Z")

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Shouldn't there be a way to make the switch node to default to "On"? When I want a switch to default to "on" I use an inject node to set it to "on" at startup, but I was wondering why the default state be couldn't be se…

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## [Using two arrays as lookup tables](https://discourse.nodered.org/t/using-two-arrays-as-lookup-tables/13408)

<div class="topic-metadata">

**Author:** [@martino\_eb](https://discourse.nodered.org/u/martino_eb)\
**Replies:** 1\
**Last updated:** [17 July 2019 15:13 UTC](https://discourse.nodered.org/t/using-two-arrays-as-lookup-tables/13408 "2019-07-17T15:13:30Z")

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Hi everyone, I am trying to build a flow that allows me to combine data from two different arrays A and B to lookup data in array B and substitute it in A in the right spot: for instance, let's say array A lists people …

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## [Flows have disappeared!](https://discourse.nodered.org/t/flows-have-disappeared/13394)

<div class="topic-metadata">

**Author:** [@hgb1234](https://discourse.nodered.org/u/hgb1234)\
**Replies:** 6\
**Last updated:** [17 July 2019 15:10 UTC](https://discourse.nodered.org/t/flows-have-disappeared/13394 "2019-07-17T15:10:02Z")

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Hi everyone, I have the same problem as a couple of other people I have seen online but haven't had much luck in solving it from reading the previous answers. Suddenly some of my flows have disappeared from the node-red…

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