Webhook does not report incoming data in the editor UI

[Mirco]

Hi,
i have a problem with testing webhooks.
Generally the webhooks run in the workflow, but when I call the test url I get no feedback in the editor ui. In the video i show my procedure.

I actually expect the data of the webhook in the editor. Unfortunately, the spinning wheel goes on spinning forever. I only get the data when I stop/restart the n8n service.

[NoDataInWebhookGUI - YouTube](missing data feedback)

It is a simple webhook workflow

This behavior makes it difficult to develop workflows and I don’t know where I went wrong.

Here are my n8n configuration variables (systemd service file)

Environment="VUE_APP_URL_BASE_API=http://n8n.local/"
Environment="WEBHOOK_TUNNEL_URL=http://n8n.local/"
Environment="N8N_PORT=5678"
Environment="N8N_LISTEN_ADDRESS=127.0.0.1"

and the nginx reverse proxy settings:

proxy_pass http://localhost:5678;
proxy_set_header Connection '';
proxy_http_version 1.1;
chunked_transfer_encoding off;
proxy_buffering off;
proxy_cache off;

Information on your n8n setup

• n8n version:0.162.0
  (standard npm installation)

[MutedJam]

Hi @Mirco, so you are seeing a response in Postman but n8n never shows the data sent to the test URL?

Does sending data to your test webhook URL work when you send a request to 127.0.0.1 on the machine running n8n? And is your n8n service healthy before you restart it and how have you configured your service?

[Mirco]

Hi,
yes, the same problem exists with 127.0.0.1 on the host running n8n.
I test via terminal:

curl --location --request POST 'http://127.0.0.1/webhook-test/assets-test' \
--header 'accept: text/plain, application/json, application/*+json, */*' \
--header 'x-hook-signature: c526e079b7b5570d899ff647cfac10f1b18a2682918472e19eb791393e0a84a5' \
--header 'authorization: Basic YWRtaW46Y29yZTRhZG1pbg==' \
--header 'Content-Type: application/json' \
--data '{ ...

Response in terminal:

{"message":"Workflow got started."}

No reaction in Editor-UI.

The service is running so far and is configured in as follows (etc/systemd/system/n8n.service):

[Unit]
Description=n8n.io

[Service]
Restart=always
ExecStart=/usr/bin/node /usr/lib/node_modules/n8n/bin/n8n
Environment="VUE_APP_URL_BASE_API=http://n8n.local/"
Environment="WEBHOOK_TUNNEL_URL=http://n8n.local/"
Environment="N8N_PORT=5678"
Environment="N8N_LISTEN_ADDRESS=n8n.local"
Environment="GENERIC_TIMEZONE=Europe/Berlin"
Environment="N8N_LOG_LEVEL=debug"
Environment="N8N_LOG_OUTPUT=file"
Environment="N8N_LOG_FILE_LOCATION=/var/log/n8n.log"
Environment="N8N_LOG_FILE_MAXSIZE=50"
Environment="N8N_LOG_FILE_MAXCOUNT=60"

[Install]
WantedBy=multi-user.target

LOG

{"level":"verbose","message":"Started execution of workflow \"Assets Webhook Test\" from webhook with execution ID 138","metadata":{"executionId":"138","file":"WebhookHelpers.js","function":"executeWebhook","timestamp":"2022-02-09T09:34:36.706Z"}}
{"level":"debug","message":"Send data of type \"testWebhookReceived\" to editor-UI","metadata":{"dataType":"testWebhookReceived","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:36.706Z"}}
{"level":"debug","message":"Received child process message of type start for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:37.818Z"}}
{"level":"verbose","message":"Initializing n8n sub-process","metadata":{"file":"WorkflowRunnerProcess.js","function":"runWorkflow","pid":7016,"timestamp":"2022-02-09T09:34:37.839Z","workflowId":"1"}}
{"level":"verbose","message":"Workflow execution started","metadata":{"file":"WorkflowExecute.js","function":"processRunExecutionData","timestamp":"2022-02-09T09:34:40.380Z","workflowId":"1"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.387Z"}}
{"level":"debug","message":"Executing hook (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"workflowExecuteBefore","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.387Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"executionStarted\" to editor-UI","metadata":{"dataType":"executionStarted","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.387Z"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.387Z"}}
{"level":"debug","message":"Executing hook on node \"Assets Webhook\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteBefore","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.387Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteBefore\" to editor-UI","metadata":{"dataType":"nodeExecuteBefore","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.387Z"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.387Z"}}
{"level":"debug","message":"Executing hook on node \"Assets Webhook\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteAfter","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.387Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteAfter\" to editor-UI","metadata":{"dataType":"nodeExecuteAfter","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.387Z"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.387Z"}}
{"level":"debug","message":"Executing hook on node \"Convert Asset JSON\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteBefore","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.388Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteBefore\" to editor-UI","metadata":{"dataType":"nodeExecuteBefore","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.388Z"}}
{"level":"debug","message":"Start processing node \"Assets Webhook\"","metadata":{"file":"WorkflowExecute.js","node":"Assets Webhook","timestamp":"2022-02-09T09:34:40.384Z","workflowId":"1"}}
{"level":"debug","message":"Running node \"Assets Webhook\" started","metadata":{"file":"WorkflowExecute.js","node":"Assets Webhook","timestamp":"2022-02-09T09:34:40.384Z","workflowId":"1"}}
{"level":"debug","message":"Running node \"Assets Webhook\" finished successfully","metadata":{"file":"WorkflowExecute.js","node":"Assets Webhook","timestamp":"2022-02-09T09:34:40.385Z","workflowId":"1"}}
{"level":"debug","message":"Start processing node \"Convert Asset JSON\"","metadata":{"file":"WorkflowExecute.js","node":"Convert Asset JSON","timestamp":"2022-02-09T09:34:40.386Z","workflowId":"1"}}
{"level":"debug","message":"Running node \"Convert Asset JSON\" started","metadata":{"file":"WorkflowExecute.js","node":"Convert Asset JSON","timestamp":"2022-02-09T09:34:40.386Z","workflowId":"1"}}
{"level":"debug","message":"Running node \"Convert Asset JSON\" finished successfully","metadata":{"file":"WorkflowExecute.js","node":"Convert Asset JSON","timestamp":"2022-02-09T09:34:40.390Z","workflowId":"1"}}
{"level":"debug","message":"Start processing node \"Validate Data\"","metadata":{"file":"WorkflowExecute.js","node":"Validate Data","timestamp":"2022-02-09T09:34:40.391Z","workflowId":"1"}}
{"level":"debug","message":"Running node \"Validate Data\" started","metadata":{"file":"WorkflowExecute.js","node":"Validate Data","timestamp":"2022-02-09T09:34:40.391Z","workflowId":"1"}}
{"level":"debug","message":"Running node \"Validate Data\" finished successfully","metadata":{"file":"WorkflowExecute.js","node":"Validate Data","timestamp":"2022-02-09T09:34:40.394Z","workflowId":"1"}}
{"level":"debug","message":"Start processing node \"IF\"","metadata":{"file":"WorkflowExecute.js","node":"IF","timestamp":"2022-02-09T09:34:40.394Z","workflowId":"1"}}
{"level":"debug","message":"Running node \"IF\" started","metadata":{"file":"WorkflowExecute.js","node":"IF","timestamp":"2022-02-09T09:34:40.394Z","workflowId":"1"}}
{"level":"debug","message":"Running node \"IF\" finished successfully","metadata":{"file":"WorkflowExecute.js","node":"IF","timestamp":"2022-02-09T09:34:40.396Z","workflowId":"1"}}
{"level":"debug","message":"Start processing node \"Convert to Binary - Error\"","metadata":{"file":"WorkflowExecute.js","node":"Convert to Binary - Error","timestamp":"2022-02-09T09:34:40.396Z","workflowId":"1"}}
{"level":"debug","message":"Running node \"Convert to Binary - Error\" started","metadata":{"file":"WorkflowExecute.js","node":"Convert to Binary - Error","timestamp":"2022-02-09T09:34:40.396Z","workflowId":"1"}}
{"level":"debug","message":"Running node \"Convert to Binary - Error\" finished successfully","metadata":{"file":"WorkflowExecute.js","node":"Convert to Binary - Error","timestamp":"2022-02-09T09:34:40.397Z","workflowId":"1"}}
{"level":"debug","message":"Start processing node \"Write Error File\"","metadata":{"file":"WorkflowExecute.js","node":"Write Error File","timestamp":"2022-02-09T09:34:40.398Z","workflowId":"1"}}
{"level":"debug","message":"Running node \"Write Error File\" started","metadata":{"file":"WorkflowExecute.js","node":"Write Error File","timestamp":"2022-02-09T09:34:40.398Z","workflowId":"1"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.399Z"}}
{"level":"debug","message":"Executing hook on node \"Convert Asset JSON\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteAfter","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.399Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteAfter\" to editor-UI","metadata":{"dataType":"nodeExecuteAfter","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.400Z"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.401Z"}}
{"level":"debug","message":"Executing hook on node \"Validate Data\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteBefore","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.401Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteBefore\" to editor-UI","metadata":{"dataType":"nodeExecuteBefore","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.401Z"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.401Z"}}
{"level":"debug","message":"Executing hook on node \"Validate Data\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteAfter","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.401Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteAfter\" to editor-UI","metadata":{"dataType":"nodeExecuteAfter","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.402Z"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.402Z"}}
{"level":"debug","message":"Executing hook on node \"IF\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteBefore","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.402Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteBefore\" to editor-UI","metadata":{"dataType":"nodeExecuteBefore","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.402Z"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.402Z"}}
{"level":"debug","message":"Executing hook on node \"IF\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteAfter","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.403Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteAfter\" to editor-UI","metadata":{"dataType":"nodeExecuteAfter","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.403Z"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.403Z"}}
{"level":"debug","message":"Executing hook on node \"Convert to Binary - Error\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteBefore","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.403Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteBefore\" to editor-UI","metadata":{"dataType":"nodeExecuteBefore","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.403Z"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.404Z"}}
{"level":"debug","message":"Executing hook on node \"Convert to Binary - Error\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteAfter","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.404Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteAfter\" to editor-UI","metadata":{"dataType":"nodeExecuteAfter","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.404Z"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.404Z"}}
{"level":"debug","message":"Executing hook on node \"Write Error File\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteBefore","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.404Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteBefore\" to editor-UI","metadata":{"dataType":"nodeExecuteBefore","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.405Z"}}
{"level":"debug","message":"Running node \"Write Error File\" finished successfully","metadata":{"file":"WorkflowExecute.js","node":"Write Error File","timestamp":"2022-02-09T09:34:40.417Z","workflowId":"1"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.419Z"}}
{"level":"debug","message":"Executing hook on node \"Write Error File\" (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"nodeExecuteAfter","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.420Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"nodeExecuteAfter\" to editor-UI","metadata":{"dataType":"nodeExecuteAfter","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.420Z"}}
{"level":"debug","message":"Received child process message of type processHook for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.421Z"}}
{"level":"debug","message":"Executing hook (hookFunctionsSave)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"workflowExecuteAfter","timestamp":"2022-02-09T09:34:40.422Z","workflowId":"1"}}
{"level":"debug","message":"Received child process message of type end for execution ID 138.","metadata":{"executionId":"138","file":"WorkflowRunner.js","timestamp":"2022-02-09T09:34:40.423Z"}}
{"level":"debug","message":"Executing hook (hookFunctionsPush)","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"workflowExecuteAfter","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.437Z","workflowId":"1"}}
{"level":"debug","message":"Save execution progress to database for execution ID 138 ","metadata":{"executionId":"138","file":"WorkflowExecuteAdditionalData.js","function":"workflowExecuteAfter","timestamp":"2022-02-09T09:34:40.437Z","workflowId":"1"}}
{"level":"debug","message":"Send data of type \"executionFinished\" to editor-UI","metadata":{"dataType":"executionFinished","file":"Push.js","function":"send","sessionId":"cblf74i74yr","timestamp":"2022-02-09T09:34:40.437Z"}}

What I have tested at this time, all with the same result:

• npx Installation on Ubuntu VMWare (no nginx) only call “n8n start”
• npm Installation on Centos7 VMWare (with nginx as reverse proxy) start as service - data in this post

I hope this helps and someone can help me.

[ruccc]

Hello,
I am facing the exact same problem… Did you got how to solve this?

I made a post:

[BUG] Workflow executions are not shown on UI

Describe the issue/error/question I am working on a n8n project, I isntalled it fresh on this server. On any workflow, if I click on “execute workflow” and trigger the workflow, the process of the execution is NOT shown on the UI. It does get processed, but I can’t see it on the workflow editor. I can watch it on the “Executions” tab. It is a serious problem because I can’t develop the workflow as I can’t refer to nodes input data on other nodes. I’ve made a video to show it: [problem…

[webworka]

I had the same problem and for me the solution from this post helped.

Setting proxy_buffering off; in the nginx proxy helped and the input from test requests are visible on the GUI.