Not working after deploy. 500 when stop pressed

Bogdan_Mind · November 25, 2021, 7:49am

Hello guys. Please advise.

Describe the issue/error/question

After deployment(one click install via Caprover) When i click run… nothing happens and just the loading icon.

What is the error message (if any)?

Here are screenshots

[Album] imgur.com

Information on your n8n setup

n8n version: n8nio/n8n:0.147.1
Database you’re using (default: SQLite): postgresdb
Running n8n via [Docker, npm, n8n.cloud, desktop app]: Docker Caprover

Here is app log


2021-11-25T07:37:19.852587802Z ERROR RESPONSE
2021-11-25T07:37:19.853843756Z Error: The execution ID "2" could not be found.
2021-11-25T07:37:19.853871027Z at WaitTrackerClass.stopExecution (/usr/local/lib/node_modules/n8n/dist/src/WaitTracker.js:58:19)
2021-11-25T07:37:19.853875088Z at processTicksAndRejections (internal/process/task_queues.js:93:5)
2021-11-25T07:37:19.853877437Z at async /usr/local/lib/node_modules/n8n/dist/src/Server.js:1407:30
2021-11-25T07:37:19.853879649Z at async /usr/local/lib/node_modules/n8n/dist/src/ResponseHelper.js:86:26
2021-11-25T07:37:42.958672775Z ERROR RESPONSE
2021-11-25T07:37:42.958724414Z Error: The execution ID "3" could not be found.
2021-11-25T07:37:42.958728487Z at WaitTrackerClass.stopExecution (/usr/local/lib/node_modules/n8n/dist/src/WaitTracker.js:58:19)
2021-11-25T07:37:42.958730931Z at processTicksAndRejections (internal/process/task_queues.js:93:5)
2021-11-25T07:37:42.958733476Z at async /usr/local/lib/node_modules/n8n/dist/src/Server.js:1407:30
2021-11-25T07:37:42.958735746Z at async /usr/local/lib/node_modules/n8n/dist/src/ResponseHelper.js:86:26
2021-11-25T07:42:45.261529978Z ERROR RESPONSE
2021-11-25T07:42:45.261805430Z Error: The execution ID "5" could not be found.
2021-11-25T07:42:45.261809846Z at WaitTrackerClass.stopExecution (/usr/local/lib/node_modules/n8n/dist/src/WaitTracker.js:58:19)
2021-11-25T07:42:45.261812230Z at runMicrotasks (<anonymous>)
2021-11-25T07:42:45.261814605Z at processTicksAndRejections (internal/process/task_queues.js:93:5)
2021-11-25T07:42:45.261816747Z at async /usr/local/lib/node_modules/n8n/dist/src/Server.js:1407:30
2021-11-25T07:42:45.261836380Z at async /usr/local/lib/node_modules/n8n/dist/src/ResponseHelper.js:86:26
2021-11-25T07:44:55.483751668Z ERROR RESPONSE
2021-11-25T07:44:55.483974550Z Error: The execution ID "6" could not be found.
2021-11-25T07:44:55.483981510Z at WaitTrackerClass.stopExecution (/usr/local/lib/node_modules/n8n/dist/src/WaitTracker.js:58:19)
2021-11-25T07:44:55.483984293Z at runMicrotasks (<anonymous>)
2021-11-25T07:44:55.483986810Z at processTicksAndRejections (internal/process/task_queues.js:93:5)
2021-11-25T07:44:55.483989056Z at async /usr/local/lib/node_modules/n8n/dist/src/Server.js:1407:30
2021-11-25T07:44:55.483991300Z at async /usr/local/lib/node_modules/n8n/dist/src/ResponseHelper.js:86:26

Also unlimited loading in triggers Imgur: The magic of the Internet

MutedJam · November 25, 2021, 8:37am

Hi @Bogdan_Mind, I’m sorry to hear you’re running into trouble. I am not familiar with Caprover, so I don’t know exactly what they are doing when deploying n8n unfortunately. Does your workflow just consist of the start node? Chances are it just has finished when you were trying to stop it.

As for Trigger nodes, once you manually execute them, they’d would wait for the defined event to arrive (or until it times out). So seeing this loading screen would be expected.

Bogdan_Mind · November 28, 2021, 2:19pm

Thank you for the ansver. But i have a problem, than nothing executes on my server. ANy button i push(execution related) and they just load…

Take a look. That how it is supposed to work (Cloud n8n)

Here is my local n8n

And nothing special in logs(

2021-11-28T14:15:54.660027981Z INFO: Started with migration for wait functionality.
2021-11-28T14:15:54.660031365Z Depending on the number of saved executions, that may take a little bit.
2021-11-28T14:15:54.660034718Z
2021-11-28T14:15:54.660037689Z
2021-11-28T14:15:54.666144859Z Start migration UpdateWorkflowCredentials1630330987096
2021-11-28T14:15:54.674159763Z UpdateWorkflowCredentials1630330987096: 7.869ms
2021-11-28T14:15:54.694999646Z n8n ready on 0.0.0.0, port 5678
2021-11-28T14:15:54.695024530Z Version: 0.151.0
2021-11-28T14:15:54.713491155Z
2021-11-28T14:15:54.713506969Z Editor is now accessible via:
2021-11-28T14:15:54.713510959Z http://localhost:5678/
2021-11-28T14:15:55.281315921Z
2021-11-28T14:15:55.281341502Z Stopping n8n...

Bogdan_Mind · November 28, 2021, 2:28pm

Simply freezing on any action(

Bogdan_Mind · November 28, 2021, 2:47pm

Found out that it is due to https, because on http everything works. If i enable https i get too many redirects error(

Basically n8n is not working, because mixed content warnings. Can i somehow disable thosу checks? Like ```

```

Jon · November 28, 2021, 3:34pm

Hey @Bogdan_Mind,

How have you configured https? Are you using Traefik or something else as a reverse proxy?

Bogdan_Mind · November 28, 2021, 3:51pm

I have it deployed via docker image in caprover
And caprover handles reverse proxy via nginx NGINX Config · CapRover
When i force https - i get too many redirects error. But without it, i still can use https, but parcially n8n is not operable due to mixed content error(

Jon · November 28, 2021, 3:53pm

I suspect the issue could be with the setup of nginx, what are your proxy pass params?

Are you able to share your environment variables with anything sensitive removed as well?

Bogdan_Mind · November 28, 2021, 3:59pm

And nginx

<%
if (s.forceSsl) {
%>
    server {

        listen       80;

        server_name  <%-s.publicDomain%>;

        # Used by Lets Encrypt
        location /.well-known/acme-challenge/ {
            root <%-s.staticWebRoot%>;
        }

        # Used by CapRover for health check
        location /.well-known/captain-identifier {
            root <%-s.staticWebRoot%>;
        }

        location / {
            return 302 https://$http_host$request_uri;
        }
    }
<%
}
%>


server {

    <%
    if (!s.forceSsl) {
    %>
        listen       80;
    <%
    }
    if (s.hasSsl) {
    %>
        listen              443 ssl http2;
        ssl_certificate     <%-s.crtPath%>;
        ssl_certificate_key <%-s.keyPath%>;
    <%
    }
    %>

        client_max_body_size 500m;

        server_name  <%-s.publicDomain%>;

        # 127.0.0.11 is DNS set up by Docker, see:
        # https://docs.docker.com/engine/userguide/networking/configure-dns/
        # https://github.com/moby/moby/issues/20026
        resolver 127.0.0.11 valid=10s;
        # IMPORTANT!! If you are here from an old thread to set a custom port, you do not need to modify this port manually here!!
        # Simply change the Container HTTP Port from the dashboard HTTP panel
        set $upstream http://<%-s.localDomain%>:<%-s.containerHttpPort%>;

        location / {

    <%
    if (s.httpBasicAuthPath) {
    %>
            auth_basic           "Restricted Access";
            auth_basic_user_file <%-s.httpBasicAuthPath%>; 
    <%
    }
    %>

            proxy_pass $upstream;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;

    <%
    if (s.websocketSupport) {
    %>
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";
            proxy_http_version 1.1;
    <%
    }
    %>
        }

        # Used by Lets Encrypt
        location /.well-known/acme-challenge/ {
            root <%-s.staticWebRoot%>;
        }
        
        # Used by CapRover for health check
        location /.well-known/captain-identifier {
            root <%-s.staticWebRoot%>;
        }

        error_page 502 /captain_502_custom_error_page.html;
        location = /captain_502_custom_error_page.html {
                root <%-s.customErrorPagesDirectory%>;
                internal;
        }
}

Jon · November 28, 2021, 4:46pm

Other than setting the n8n protocol to HTTP it looks ok but that nginx file seems to use a lot of variables. It could be one of those not playing ball.

Have you tried using a simplified proxy setup? It is tricky to work out the file actually contains once the dynamic options are set.

Bogdan_Mind · November 28, 2021, 5:02pm

Idk how easier other then that nginx config i can make(

Do you happen to know how i can add?maybe this will help

add_header Content-Security-Policy upgrade-insecure-requests;

Jon · November 28, 2021, 6:10pm

By easier I would strip out all the dynamic parts and hard code them for now.

I know in my setup with nginx I have the n8n protocol set to http as nginx handles the https side of things.

I will have a look at setting up caprover tomorrow if no one else gets to it first.

Bogdan_Mind · November 28, 2021, 7:20pm

Maybe you could share your nginx setting and they could be suitable for me?

Jon · November 28, 2021, 7:54pm

That I can do but it will need to wait until the morning, on the weekends I tend to check here on my phone.

What I will do is put together a small guide on setting up n8n behind nginx as it may help others in the future.

Bogdan_Mind · November 28, 2021, 8:18pm

Sounds great, ty, can’t wait) if you are good with nginx, it would be cool to mention how nginx to force ignore root ssl cert.

Bogdan_Mind · November 29, 2021, 11:11am

My update:
I managed to make it work on https, but still get freezes after lanuching any action(while on https protocol) Like it can’t communicate with backend with mixed content warnings.

Take a look : (Maybe this behavior of docker / application / ngix will tell you something)

I accidentally noticed this anomaly: Loom | Free Screen & Video Recording Software recorded a video.

I comment: in the application, as a standard, I press execute a cube (get request, for example) while the https protocol is enabled - it hangs up as always.

But!! , if at this moment you update the nginx settings (if you press save & update in the console, then the caprover reloads this docker instance and nginx settings), then the REQUEST WILL BE FULFILLED!)
Then, of course, 10-15 seconds error 502, the container is loaded. And again you can refresh the page and it won’t work when you push it.

Maybe you have any suggestions what this might be related to?