# Development mode doesn't work **URL:** \ **Category:** Questions\ **Created:** [August 10, 2021, 11:37am UTC](https://community.n8n.io/t/development-mode-doesnt-work/7191 "2021-08-10T11:37:27Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![undefined](https://avatars.discourse-cdn.com/v4/letter/u/7feea3/32.png) [@undefined](https://community.n8n.io/u/undefined)\ **Post date:** [August 10, 2021, 11:37am UTC](https://community.n8n.io/t/development-mode-doesnt-work/7191/1 "2021-08-10T11:37:27Z")
Hi, I’m running n8n in development mode (npm run dev). In documentation there is an information: > It will then automatically build your code, restart the backend and refresh the frontend (editor-ui) on every change you make. When I made some changes in code and hit CTRL+S then I get: > 13:15:43 - File change detected. Starting incremental compilation… > n8n-nodes-base: 13:15:43 - Found 0 errors. Watching for file changes. but then nothing happened. Frontend is not refreshed and to see changes on UI I need to close and run once again `npm run dev` command. Is it something specific to my dev machine or that’s how it works? Anyone know what can I do to make my dev life easier? 😉 ---
**Author:** ![jan](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/jan/32/9_2.png) [@jan](https://community.n8n.io/u/jan)\ **Post date:** [August 10, 2021, 12:54pm UTC](https://community.n8n.io/t/development-mode-doesnt-work/7191/2 "2021-08-10T12:54:39Z")
Welcome to the community @undefined ! You will see frontend changes only if you connect to port `8080` and not port `5678`. As only there it does hot-reload. ---
**Author:** ![undefined](https://avatars.discourse-cdn.com/v4/letter/u/7feea3/32.png) [@undefined](https://community.n8n.io/u/undefined)\ **Post date:** [August 10, 2021, 1:13pm UTC](https://community.n8n.io/t/development-mode-doesnt-work/7191/3 "2021-08-10T13:13:11Z")
Thanks @jan! My bad, you’re right, I’ve used port 5678 instead of 8080. But still, I edit e.g. `packages\nodes-base\nodes\Spotify\Spotify.node.ts` file and I don’t see changes on the UI, even when I refresh page manually. That’s strange… any ideas? ---
**Author:** ![jan](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/jan/32/9_2.png) [@jan](https://community.n8n.io/u/jan)\ **Post date:** [August 10, 2021, 1:23pm UTC](https://community.n8n.io/t/development-mode-doesnt-work/7191/4 "2021-08-10T13:23:06Z")
Ah yes, for that you still have to restart n8n and then refresh the browser. The reason for that is that it is not a front-end UI change. It is a change of a node and nodes do only get read once when n8n starts. That is however only required if you make changes to the parameters. If you make later only code changes in the `execute` functions, and you have n8n set to run every execution in a new process (default setting, alternative is [main](https://docs.n8n.io/getting-started/installation/advanced/configuration.html#execute-in-same-process) mode) then a restart is not required as for each new workflow execution a new process gets started and each process and so the latest code gets read. ---
**Author:** ![undefined](https://avatars.discourse-cdn.com/v4/letter/u/7feea3/32.png) [@undefined](https://community.n8n.io/u/undefined)\ **Post date:** [August 10, 2021, 1:43pm UTC](https://community.n8n.io/t/development-mode-doesnt-work/7191/5 "2021-08-10T13:43:35Z")
Thanks for explanation. I’ve checked and there is as you described - code changes in `execute` function works as expected. Earlier I’ve tried change something in function which is defined in `methods.loadOptions` but looks like it’s the same behaviour as for parameters - changes are not reflected until I restart n8n - is that correct? ---
**Author:** ![jan](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/jan/32/9_2.png) [@jan](https://community.n8n.io/u/jan)\ **Post date:** [August 10, 2021, 2:05pm UTC](https://community.n8n.io/t/development-mode-doesnt-work/7191/6 "2021-08-10T14:05:47Z")
Yes, that is correct. The reason for that is the same as for the parameters. It reads in that information only once on startup and the main process then serves that information. So really only changes to the `execute` function will work without restart. If you create a Trigger-Node and you make changes to the `webhook` function you also have to restart n8n because also that function gets executed in the main process. ---
**Author:** ![jan](https://dub1.discourse-cdn.com/n8n/user_avatar/community.n8n.io/jan/32/9_2.png) [@jan](https://community.n8n.io/u/jan)\ **Post date:** [August 10, 2021, 2:09pm UTC](https://community.n8n.io/t/development-mode-doesnt-work/7191/7 "2021-08-10T14:09:59Z")
fyi: I personally never run `npm run dev`. What I do is that I run `npm run watch` so that the code always rebuilds and in a different terminal run `npm run start`. So if I made code changes I only have to restart the n8n process and do not have to wait for the whole project to rebuild. So you will be able to iterate much faster. If I additionally make change to the frontend (so actual UI code, not just node parameters) then I have a third terminal with `npm run dev` running only in the `packages/editor-ui` folder. Hope that helps.