N8n's UI doesn't shown

Questions
1

Describe the problem/error/question

Hello everyone,

(I’m not sure if this is the right place to ask I couldn’t getany answers from Yuno’s forum so I decided to ask here. I hope there is no problem.)

I wanted to update n8n, also its service seems working properly but the UI not. There’s nothing shown on the page. I tried to get everything back by restoring, make a clean installation from app store etc. however, unfourtunately it doesn’t worked. Also the lastest version seems 1.116.2~ynh1 Yuno’s GitHub repository. For updating, I tried the solution from this topic.

Thank you.

Here some logs:

Information on your n8n setup

  • n8n version: 1.116.2~ynh1
  • Database (default: SQLite): PostegreDB
  • n8n EXECUTIONS_PROCESS setting (default: own, main): default
  • Running n8n via (Docker, npm, n8n cloud, desktop app): YunoHost
  • Operating system: YunoHost 12.1.36 stable (Debian 12)
2

Glad you shared the logs @atakanozban , they’re helpful. n8n itself is starting correctly, so this looks like a UI loading issue, not a backend failure. You can safely clear the invalid license with:

n8n license:clear 
systemctl restart n8n

After that, open the editor again and check your browser’s Console + Network tabs for any failed JS files or errors. The blank screen usually comes from a missing/blocked frontend asset.
If you can share those console errors, I can help pinpoint the exact issue.

3

Yeah it was, so I’ve solved yesterday night. It because from the directory. It calls the UI’s assets from the wrong path. I thought I edited the .env file, but systemd overrides (/etc/systemd/system/n8n.service.d/override.conf) it.

  • N8N_PATH=/n8n/
  • WEBHOOK_URL=https://<domain>.tld/n8n/
  • N8N_EDITOR_BASE_URL=...

YunoHost’s SSO enters between of them returns HTML instead JS/CSS, and the browser reports “MIME nosniff” breaks the UI.

Also, the paths are looks weird like:

/n8nstatic/, /n8nassets/, /n8nfavicon.ico

So the solution that I made is:

  • Editing the override file into correct URL/path and then restart.

While solving this issue I applied those prompts:

1) Checking the n8n if it is active:

sudo systemctl status n8n --no-pager -l

2) Is UI shown on local?

curl -sS http://127.0.0.1:48248 | head -n 20

3) Checking the paths of assets (the most crucial one):

curl -sS http://127.0.0.1:48248 | grep -oE 'n8nassets|n8nstatic|n8nfavicon' | head

4) Is systemd really overrides it?

sudo systemctl cat n8n | sed -n '1,160p'

Also checked /etc/systemd/system/n8n.service.d/override.conf if there is N8N_PATH, WEBHOOK_URL, N8N_EDITOR_BASE_URL.

5) Writing the correct settings to override file

Configuration for subdomain:

[Service]
Environment="WEBHOOK_URL=https://n8n.<your-domain>.xyz/"
Environment="N8N_EDITOR_BASE_URL=https://n8n.<your-domain>.xyz/"
Environment="N8N_PATH=/"

Or in path like /n8n/:

[Service]
Environment="WEBHOOK_URL=https://<your-domain>.xyz/n8n/"
Environment="N8N_EDITOR_BASE_URL=https://<your-domain>.xyz/n8n/"
Environment="N8N_PATH=/n8n/"

6) Reload + restart

sudo systemctl daemon-reload
sudo systemctl restart n8n

7) Checking again local HTML to see if our settings that I made are applied:

curl -sS http://127.0.0.1:48248 | grep -oE 'n8nassets|n8nstatic|n8nfavicon' | head

Notice: It mustn’t see the paths like: /n8nstatic/, /n8nassets/, /n8nfavicon.ico etc.

8) Looking for is there nginx/SSO redirect from outside:

curl -k -I https://<your-domain>.xyz/n8n/ | head -n 20

If location indicates as /yunohost/sso/ (something like that) it redirects to SSO.

1 Like
4

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